I am the originator of the machined sheave Mod#3 and Cam plate Mod#2 and the original 2mm shim Mod#1
I am only doing the mod's on a case by case bases, so please e-mail me before you send your Clutches.
And have a great Day.
This video is me running my Mod#4, it has the maximum lowest ratio, and the tallest ratio for top speed in High and Low range with out rubbing the primary support cage!
This Mod was only done to set things straight!
Mod#3 is all that is needed!
It really is just that simple with Coop's Clutch Mods!