lifter trouble

just wanted to add i checked the preload on the rockers all within the 30.thousands range if the milling had it off wouldn't it bend a pushrod before doing that damage to the lifter compcams site showed an lifter like mine said caused by lack of oil during break in or motor turned over to long before starting i did have the dist. 180 off at first but didn't turn it alot before starting i have 80 pounds cold 50 hot at idle 70 hot at 1500 rpm i have an crane 268 cam still scared to try it anybody with any input