hey i took apart my 12a today because i am doind a rebuild on it and the chrome on the housing was shipped off waht casue this. i dont want to do it on my next engine. thank you.

p.s. i have a turboed draw through setup on it.

 

Looks like typical high mileage wear along with some high rpm, (over 8k) apex seal chattering. What do the rotor bearings look like?