Cam Bearings too tight, any suggestions??

Thanks guys, that´s what i thought about, using a scraper carefully. I installed the bearings with care, no dirt inside.

Is this a common problem? The tool i made is a long shaft with different diameter drives, made some other blocks with it (also new cams), worked good until this one.

I´ll give the scraper (or razor blade) a try, thanks!

Michael