I have a pro mod sleeper06 did for me. I shift the thing with just a slight lift of the throttle to relese a little tension on the gears. slides in like butter. I hadcam at redline do the pro mod in my girlfriends bike when he had that Christmas deal going on. same deal.
the biggest thing is what tricked said. Everything is new and adjusted correctly. New forks, shift shaft, eccentric, hub, pressure plate, and all the other pieces. All of that is just as important as the trans its self.