camshaft pinion

Hello, I have a 95 Softail FXSTC with 50k on it, it started running bad, so I pulled the cam and noticed one of the lobes was worn, then I found that one bad lifter, and the bearings where coming out of the roller, my question is, is there any thing I can do to remove all the trash the lifter...

I have a 1979 shovelhead engine, I assembled a camshaft pinion and the other two pinons from a shovelhead 1979 engine, everything fit, but it is making noise. I know that some engine cases use color code, but i don't know which one i have to use or where I cad see to find out the proper color...