I'm sure this has been discussed at some point, but thought i'd give it a shot anyway. I've noticed that my Z6 seems really underwhelming on low end power. I can still get it up to about 55, so the top end sees fine. Is this just the way it is or should I be looking at something? Thanks!

Adjust the secondary clutch for more backshift. I would try C1 and leave the primary roller weight alone. You could try sliders to replace the rollers. Could get them in the same weight 25g, or try 24g to move the shifting rpm up. Lighter will rob high end a little.

My Z8 had a throttle stop on the pedal that was set to stop at about 7/8th throttle. Make sure you get full throttle.