MXZ / Legend / Summit / Grand Touring / Formula
Going to tear into my 670 clutches and rebuild/freshen them up with new bushings springs, rollers, etc. Only pulling about 7500 rpm on clicker 6. Sled is a has a 136x2" track, 8t drivers, 19/44 gearing. Should i stick with the 286 ramps, violet/yellow spring, and beige secondary? Or what would...