passenger side rear lifter

[dj53]

Hi guys and gals,, can anyone explain to me why I am replacing my second rear pas side lifter.....and is there a fix for this.. Thanks so much. DJ.....its a ford 360 fe lil bigger cam in it..

[Freightrain]

What's failing? Hydraulic( and it ticks?)?

If it's eating the bottom, then likely the cam is already hurt and will continue to hurt any lifter you put on it.

What's the preload like(if hydraulic)?