Hey guys. I've bought a second hand GoTech 7 port (Gen4 I believe) to run in my D8 for a while. I had a mate that races them take a look at it for me and he thinks that the rear bearing is just about stuffed. My question is this, if I am going to replace this bearing and make sure its running well is there anything else I should get done while I am at it?

Cheers,
Gary