So, new crank assy and compensator. rough idle, a little rough up to 3k, smooth at 3k, vibration over 3k, shudder when you crack off the throttle. Shim the compensator?

 

Maybe the primary chain tension? The chain causing some harmonic vibrations when unloading.

 

Could be. Just had the cover off to change the compensator. Looked o.k. then. Don't know how long those tensioners should last.

 

Using the stock auto-tensioner?... ditch that pos... install a Baker.

 

I think I'll do that.

 

Manual or spring loaded?