THAT hanging spot might be a missing roller bearing or 2,check your oil filter to be safe!I had a set of comp solid roller lifters do that and found 3 bearings in my oil filter and 5 in the oil pan!Called comp and they told me that u r supposed to rebuild them every year, mine were 3 years old.I switched to gs lifters and was told to replace or rebuild after 200-300 runs.