Good news, the mounting holes are the same width. I'll order that part and the ones that go with it. I think I'll drill out the hole and mount the brass nut, it's strange how the warwick didn't use the same setup.

I actually have 2 new oilers, just not in the pic.

Today looks like a nice day to strip the whole thing down and give it a good clean, I'm going to film it so I'll be able to put it back together :D