What are you worried about ...you got a drag bike, you're only using the clutch to stage and launch...then click, click, BOOM (oh, that's my race...LOL)
J/K...
I have the EZ pull lever and perch from Jeff with the roller bearing, it works fine. As said...you'd be surprised how much crap gets in the cable, I usually take paper to make a makeshift funnel, insert it in the end of the clutch cable, and give it some WD40 or Liquid Wrench till it runs out the other end.
Put a dab of grease on the pivot points and the bolt as well. You'd be surprised how much easier it'll pull probably oiled....