I'll go with whatever krooser comes up with
We fed from the front and fed the rockers externally and did a bunch of other things that probably made little difference- like the cross over tube- but they did not hurt
the tappet leaks hurt and the rocker feed hurts
now we get all this working and YR comes up with timing
I guess when we slotted the main saddles and fed from the side we were somehow addressing timing as well as getting a better hydrodynamic wedge for the mains
listening
never done 8500 in a SBM never had the heads to feed that