131fun,
You are right performance has its issues, been there done that and broke my fair share of parts along the way, but these issues imo aren't performance related. I am not telling you what I heard I am telling you what I saw, documented and went through not what Jim's told me. Anyone interested in buying a Jim's motor should have both sides of the story to make an informed decision to purchase or not purchase.
In Jim's defense even though it took many many months Jim's stood behind their product and made it right, which is more than some companies would have done.
Cam plates with soft metal issues and/or alignment problems, flywheels that hit the cases, heads that leaked oil through the intakes, oilers, Power Glide II lifter issues, low initial compression (153 ccp) from the factory these are not performance issues, but what I would consider Q/A, Q/C and Assembly problems.
In the end they replaced my cases, flywheels, cam compartment and even kept my original heads and sent the new ones to Dave Mackie to be inspected and Q/A'd for my motor. I now have a completely refurbished (new) motor sitting in a box in the garage . 8500+ dollars I wish I had spent with S&S.
I agree to disagree and move on.
Enjoy twisting the wick and hope yours stays together better than mine.