Bought a 110k 03 durango sludger 4 years ago with 3 rockers/followers off! I raised the lifters up with about '025" via washers, before putting those 3 rockers back in place. May have helped, I don't know. Did run a quart of marvel mys oil through it, and ran it an hour on that stuff. Then I changed the oil and filt about 3 times in the next couple of weeks, and all is well still with now over 160k miles. I've changed the oil every 3 to 4 k miles since then. Never hear a peep out of valve train. That was a 16 valve engine, yours a 32?