An RV cam would be nice for a heavy truck. Cam/lifter failure has to be a consideration. Good suggestions for lifter refacing and a regrind.
I used Oregon but mine was a Magnum roller. No issues.
FWIW I watched a YT video about causes of cam and/or lifter fail. It was stated that cam grind angle seems to be the issue. If you decide to replace your cam you should definitely measure for lifter crown and cam lobes should have longitudinal taper to them so that the lifters will spin in their bores.
a couple other peopled are recommending to just go with a roller cam to save the headache and if you do have a cam failure by the time you tear it down again to get all the metal out of the engine plus a new cam your probably cheaper to have gone roller to start with this is one of the better videos I have seen on this problem