re: 'what is the bad thing, with the warning paper about using the frp lever? I dont get it.'
I don't know why 'we' are here, on a MONTHS old post, but I'll take it as a sign from God that 'freestyle is doing some research. YeeHAw!!
I assume (it's not mentioned here) that the 'warning paper' reference comes from another thread where the instruction sheet was mentioned as being very important?
Do you have an frp kicker? Or the sheet? If you do, then the 'bad thing' is clear.
If you don't check the clearance between the base of the kicker lever and the case throughout the possible lever movement you may end up ramming the lever against the clutch case. That's going to last for a few smacks, then you won't have a case to ram it against no 'moh. But then, you won't be riding anywhere for awhile, either!! ;)
Mostly this will happen with worn footpegs or peg pins. Still..if you stick on one'a frp's kickers and don't check the clearance, you may well be very very sorry. AND a whole lotta $$ poorer.
FTR. My frp kicker (with a new knuckle) 'tinked' a bit on my pipe. I'd already positioned it for the best fit, with some metal removal on the backside to clear the frame. BUT with the last trip to pacific crest pipe repair, the pipe fits much better. Kicker clearance isn't a problem right now.
FmF is famous for lousy fit. Just because one kicker hits the pipe doesn't mean the same is true for all kdx installs. If you had to guarantee that the lever you designed would fit every kdx with an FmF pipe.......you would have a nightmare on your hands for sure!