I bought my klippermate around December and i have to say its amazing saves a ton of money. funny thing is I play with Pro open also
. my first job took 2 hours and it made me wish i actually used syn gut often its so much easier to string than most of the dumb polys people give me. Also i use the knots from a site idk if i can link it http://www.keohi.com/tennis/misc/knots.htm
the ones in the klippermate guide are annoying sometimes.