Wiped Cam Lobe Theory - Imput Wanted:
Cam lobes are usually wiped during the initial start up of the engine because they weren't lubed and broken in properly. On A engines the lobe that gets destroyed the most is the one at the very back of the engine because there is no oil drain hole directly over it so it relies almost entirely on oil splash from the crank to lubricate it. If you don't get the engine started and revved up immediately the cam is doomed.