Hey guys, I think i need to replace my bearing. Lemme know if you think my issue is something different from the pic i attached. The amount of black oil pictured is after flying 4 flights.

I DO have my thrust washer in. And I've got lessthan .005" of play for and aft.

Are there any "how to" links or videos on how to fix this issue, and where can i find the parts? I couldnt find anything at tower.....

The engine is a Thunder Tiger GP-42

thanks guys,
Jeremy