im upgrading my response to Hdi bearing, and i wanted to drill flanges and rims to get access to the grease fittings.... Since i use wheel spacers to be able to use tracks, i can't do that lol spacers is offset with wheel studs so wherever i want to drill there is a stud....

I guess finding a long 90 grease fitting installed on bearing flanges (HDI) aligned to 10 clock could work great to be able to grease without removing tracks.. just a thought