Problem removing inner valve springs

I start low 1800...and work my way to 2400..then finish with a couple 3000 whaps.
Hughes cam, only one to go bye bye...165 seat psi imo was the killer.

If you never lost a lobe... then you can't really assume or say that 3,000 RPM is what's going to do it, can you.:usflag:
I think we're on the same page. increasing rpm steady at the end.