Bearings go often in these 1/8 buggies so make sure you get a few sets to have with you. I don't recomend running 1.1 springs with any carbon clutch shoes because they put a lot of stress where the clutch mounts to the pin making the shoes crack and fail often. I still use ofna carbon shoes in my kyosho but don't use higher than 1.0 springs. I tried 1.1s and the shoes failed everytime.

If you want some tuning options for a clutch here it is. Carbon shoes slip a bit while aluminum shoes grab very well. Stiffer springs (like 1.1s) let the clutch grab later while the rpms are higher giving you a harder hit when the power make it through the drive tran but if there to stiff the motor will rev but you wont get power to the ground. Softer springs (0.9) will engage the clutch sooner giving you quicker responce but if they engage to quick it will bog the motor. Try a setup, run it, and feel how the clutch engages as you accelerate and keep trying different setups untill you find one you like. Even try mixing springs and carbon or alum. shoes. I'm running two ofna carbon shoes with 1.0 springs and one kyosho alum. with a 1.1 spring to make my clutch engage how I want it to.