Greetings,
Only TWO issues I know of.....
1. They quit making them
2. It ain't mine

Clean her up and ride!

 

Also don't try to get the idle too low. "They Say" Evo's need to idle around 1K RPM for oil to flow properly. And the flywheels are different than Shovels. Now, how that applies to a 96" S&S, I don't know, but you don't want to try to get it to sound like a shovel at idle. Bad for the motor.

 

Quite right. I believe the flywheels of an evo are lighter than a shovel. While the engine is running slowly each firing stroke accelerates the crankshaft, while each compression stroke slows it down. So if the tickover is too slow, the bottom end is given shock-treatment with each revolution. Around 1,000rpm keeps it running nice and smoothly. And a good thing too!