New roller cam...

Yeah ive done a lot of reading now and i realize a roller setup has a lot more to it than just some lifters and a cam. But if i were to take and buy the same cam and lifters IF EVERYTHING ELSE LOOKS GOOD and i went to go break it in, what do i do differently to ensure it doesn't have the same fate? I also realized that although my cam kit came with single springs with dampers i should NOT have used them as they were too high of spring pressure. Im not sure what lbs they are but what spring would you recommend for cam break in with stock style heads?
I have not had a problem breaking in cams with a 340 type single spring with a dampener. It would have to be a pretty stiff spring to cause and issue. The dampner itself doesn't add anything to the seat pressure.

If I were in your shoes, I would tear down your engine clean everything and put it back together with new bearings if needed. I would then get another hydraulic flat tappet cam (not comp), and find a set of NOS or NORS 30 or 40 year old made in USA flat tappet lifters to use. There are usually some listed on ebay. IIRC there is also a guy on forbbodiesonly selling a big block set now.

You are looking at $1500 bucks at least to convert to a roller cam set up. Not budget friendly to say the least.