I've exchanged emails with alibaba and they will not ship to USA.
Having a couple of racquets (unstrung, no grip) that I know the exact swing weight of, I can tell you the "Stringway sw advisor system" works (see section SW Calculator)
All you need is an accurate scale, small surface supports...
I am a proud member of the Stringway Users Club.
I recognize that Fred (Technatic) posting on the boards might seem (to those who are not fully on board with Stringway's approach) like self promotion. I say any company/individual who is offering to manufacture a piece for a machine built and...
Based on the info that you are a novice I will offer the following:
1st) there is no universally accepted #1 stringing machine
2nd) read and watch ALL threads included here (Stringing Techniques/Machines Sticky)
Try Wilson Revolve (not spin) as a cross. I have been impressed with the longevity (combined w Lux 1.25 gut in mains)
I have access to a Babolat RDC, a Stringlab2 or a JET tension Analyzer to check string bed tension. I have seen minimal changes since the initial 5% drop. Currently down just 7...
So this post has me considering trying an extended length but I am unsure as to if I would need to adjust balance point (310mm).
Ie if on a 27" my spec is 320 static weight, 310mm balance point (which I fine tune with TW Tungsten Putty), would I still go with the 310 balance point ?