I've seen more than one solid roller cam that had skids marks on the back side of the lobe(shinier than the front or bottom of the lobes ) from the lifter loosing contact with the lobe after max lift
I suspect not enough spring pressure causes that for the intended upper RPM limits I shoot for a little more pressure on the seats(15 to 40 Lbs) and over the nose and similar more pressure over the nose to allow for some pressure loss after engine run in time
I've seen from 10 to 40 Lbs. spring pressure loss after running the motor at the track and on the street for several years, that is on a motor that I had the rocker arms oiling full time and .039 restrictors in the oil feed circuit to the rocker arm shafts
I sincerely believe you can do more damage to a solid roller cam and lifters by using to little pressure on the springs than by adding a bunch(40+ Lbs) more pressure with them