BB rear main seal retainer

Thanks Kim. Bought the viton rms and side seals from 440 source. Guess I should've ordered the retainer also. There are so many contradictory posts on what to do/not do, what to buy/ not buy it's tough for a noob to the rms process to figure out the right direction to go
I tried one from hughs , wouldnt fit w/ my mainstuds that I had already cut down , they took it back (good guys), i REINSTALLED THE STOCK ONE , WENT THRU THAT CRAP ABOUT 4-5 TIMES , YES LAYING ON MY BACK . Finally bought one on ebay that claimed to clear the back studs , after finding the stock one wasnt made/machined/cast centered on the crank, bolts would pull it off center when tightened .< repeating myself !