No problem, you're certainly welcome. Regarding fitting the Wise to the 602FC, you're correct. It will fit without trouble.
There's a "drop weight adapter" made/sold by Wise for exactly this purpose.
Don't pull the trigger too quickly about purchasing the drop weight adapter (normally about $25) because you
may be able to get it for free.
When I bought my Wise, Dan was including
one adapter (your choice of the drop weight adapter, or the Gamma adapter [for Gamma crank machines]) in the purchase price of the tensioner.
Whenever you get around to purchasing a Wise tensionhead, call up Dan at Wise and have a chat with him. See if the free adapter option is still viable.
If it is, you may want to purchase directly from Wise/Dan.
Don't be lured into thinking that you'll need the optional foot pedal. The consensus is - you won't need it (or won't use it, even if you
do have it).
It's well documented, in this forum, that those that bought the foot pedal ended up putting it in a drawer somewhere.
I would agree with this, however, I do favor a diabolo/linear gripper, over a rotational gripper, for numerous reasons (which I'm not listing here).
Besides saving you a bit of money, the other advantage to the 602FC/Wise combo over the Prog. ELS is that
IF anything were to ever go wrong with the electronic portion of the machine, you wouldn't be put completely out of commission. You would still have the original drop weight mechanism, which you could reinstall and then resume being able to string frames (while you've sent in your Wise for repairs).
IF the electronics have issues on the ELS, you have no back-up tensioner.
To be clear, I'm not knocking the Gamma ELS machine. Actually, there are some
very thorough and immensely positive reviews of the ELS machine in this forum.
You may want to check out those threads. A while back,
@AndI authored a
thoroughly full review (complete with photos) shortly after purchasing his... and
@Herb always praises how well his has served him as his back-up machine.
Found it...
https://tt.tennis-warehouse.com/ind...-els-review-with-pictures-and-details.599040/
There are also other threads/photos in this forum of users who've mounted the Wise to their Gamma X-6FC/602FC machines.
Also worth quick mention... the 602FC/Wise combo will
not have a turntable brake (if that's of high importance to you), whereas the ELS machine
does have a turntable brake (a nice "gear style" one). See post #54, in AndI's thread, linked above, for photos.
Sounds like good use of the money to me.
Yeah, the Wise slides right onto the arm of any crank machine
very easily (that's exactly what it was originally designed for), but mounting it, with the adapter, to the 602FC shouldn't be difficult.
Overall, I would say that the mounting and clamps are
relatively similar.
The Alpha is built like a tank and most people typically give the nod to the Alpha for it's base clamps and sturdy/solid turntable.
Regarding the mounting, both the Gamma and the Alpha utilize the relatively common "6 knob" type mounting mechanism.
The Gamma usually gets the nod from most people (especially, now that the Gamma machines come with the 4 "C" or "V" style frame supports on the side shoulder supports... as opposed to the older "L" style supports that used to be on the Gamma machines, and are
still on the Alpha). See post #15, in AndI's thread, linked above, for a photo.
Regarding the string clamps themselves... I'm not really in a position to say, since I've never personally used the Alpha clamps.
I think I remember reading threads (possibly a Pro's Pro clamps vs. Alpha clamps type thread?) where people said they were alright, but nothing really great. I guess "average" would possibly be the popular vote. Maybe others here, who are familiar with the Alpha clamps, can chime in. Do they have diamond dust in them?
Personally, I
LOVE my Gamma clamps. Love, love, love them.
Diamond dust in them (doesn't require a lot of pressure to securely hold a string), slim, unobtrusive, super quick to adjust, and perfect spacing of the 5 teeth (a
big deal to me). See post #10 and #27, in AndI's thread, linked above, for good photos.
You very well may want to keep it that way (a secret).
Once you've made that proclamation, it would be difficult to change the dynamic (should you ever regret it further down the road). My advice would be to just say "don't worry about it" each time you string their frame up.
You can continue doing this for as long as
you want to, but this way still gives you the
option, down the road, to change your mind (if you wish).
If you make that "announcement" outright, then they will
feel like it's something owed to them (and therefore have less appreciation for your time/efforts).
If you
don't make that "announcement" to them,
eventually they will feel an obligation to give you
something. Then, each time you string a frame for them and say "nah, don't worry about it" it will
feel like you are doing a favor (which you are).
It's a perception thing. When people get things for free, they oftentimes (unintentionally) start to feel entitled. My advice - keep the leverage on your side.
Sounds fair to me.
Good luck!