All my socket screws were replaced with hex bolts, not sure if they’re any easier to remove vs. sockets due to that design and tight quarters.
Any hoot, there are specialty allen socket screws with a hole drilled through the center for oiling purposes, it shouldn’t require any special tool.
That said - I researched and found this - A Pilot End or Tip allen key, hopefully you have a local source shipping from M-C is costly.
https://www.mcmaster.com/products/allen-wrenches/l-keys-3~/tip-style~pilot/
