Yep I have a 50mm(2 inch) pully on it, my clutch motor had one on it I was able to reuse just had to get a new belt. I tried the servo first w/ the pully it came with, about 4", because I didn't pick up a belt and I just had to try it. Then last weekend I went and got me a belt for the 2" and you arent kidding big difference. I can pretty much stop the needle anywhere. Speaking of belts how tight should it be, I can squeze it with slight pressure at midspan and can almost touch the two halfs together. Thank you guys for all the help, I can't believe I was to cheap earlier to get the servo. If anyone is considering one do it, its 100% better.
Ive been practicing on my straight lines, I think I'm ready to give it a shot but maybe I will practice a little more. I'll try it at a snails pace, I've been going slow but I can go slower. Do you just use an erasable gel pen to mark the lines with?