92 trx250x rocker wear… 2nd set

New to forum and love the feedback so far!!! My question.. bought this quad and ran fine for a month.. developed a bad tick so I opened up the rocker box and noticed the rockers were cashed… so having it opened already installed new rockers new stage 1 cam and new cam chain and sprocket!! Ran like a raped ape for a month! !! Now the ticking came back, opened it up again and rockers are cashed again!!!! The arm looks discolored from high temps.. but I’m actually running a little rich.. checked oil filter and that is installed right and seems to be plenty of oil in the top end!! Wth can possibly cause this!! Please help!!