Solid roller cam wiped out

Look into running the rollers with pressure fed pin and bushings in place of needle bearings for the street. Any increase in lash indicates an issue with the solid bushing lifters. While the needle bearings disintegrate so quickly, its hard to catch it between lash checks.

I went top shelf on the roller lifters on my street motor for this very reason, and chose the Isky Red Zone solid rollers with bushing.

A complete teardown and cleaning is wisest, but clean out the oil pan at the very least if you are not going for a full disassembly. That's a lot of hard metal in the motor.