Wtf - roller rocker

If it happens again, you need to be contacting me. Pushrods don't just pop out unless there is valve float opening up lash. (Edit) And, it's not low spring pressure. It's valvetrain instability from poor geometry. It's amazing, after all this time, that spring pressure is still the "go to" culprit as soon as valvetrain issues raise their ugly head.

Also, if you purchased the rockers as PRWs, I'd have some serious questions for the seller. PRW does not use a guided rocker, at least not in the last ten years, that I'm aware of. I think someone sold you a set of Speedmaster rockers.