The oil feed hole from the T/S bush is semi blocked when grub screw installed.
While cleaning out the sludge trap on my A7 short stroke crankshaft I noticed that when the grub screw is fully installed, it blocks off half the oil hole from the T/S bush.
I measured the depth of both grub screws, the one I removed from the drive side is 0.322” and the one removed from the gear side is 0.274”.
The parts book states they should both be the same.
Even though the shorter one of the two was installed on the gear side, it still blocks off half the oil supply hole (see photos).
Has anybody else experienced this? Is it quite common, so all I need do is grind a chamfer on the threads of the grub screw to allow better oil flow?