I really don't think there is an oiling issue. The way these new Hemi's are oiled the 7/8 rod's are the last to get oiled. The main problems/failures come from the 5/6 rods, next the 3/4 rods getting married to the crank. Never seen a failure with the 1st oiled 1/2 or the last oiled 7/8 journals.

I take it Barton also know's there's an issue with with the exhaust rocker shafts at high rpm. Right after Indy he personally called and bought a set of our rocker shaft ties.

I have my own thought's and theories as to why the center 4 cylinder's have issue's and it ain't oil.