Tried 62.42 helix and didn't like it with MTX or Belly Buster weights. Right now I have stock helix, 64g Belly Buster weights, Blue/pink in primary, Delrins, shim in primary, and adjusted belt tension. Has a lot of bottom and mid but falls off just a bit at the top. I am satisfied for now (like the low and mid range torque)since belt wear is good. Also put vent in front of clutch but that's it so far. Have heard a 56 or 58.38 is working great stock or twin pipe set-up so may try that or just wait till next year and the single pipe. Guess it depends on what you like.
