Artie
Peaveyologist
I'll toss this out here even though it's not a solution that works for everyone. Since I work on guitars, I tend to have some tools around that not everyone would have. Like the proper size tap & drill to do pickup mounting holes. And almost every Dremel accessory ever made. I've faced this issue before and am currently dealing with it in order to install my 2-hole Psyclones into my 3-hole Gretsch.
Basically, I just use a small piece of brass hobby stock, like you find at a Hobby Lobby and such, and drill and tap it to proper hole spacing and thread. Then use a cut off pup moounting screw to mount the brass plate to the pickup to make a sort-of T-bar. Then mount as usual. On a trembucker, you'll need to grind a bit of the foot sides off. It's not as hard as it sounds, but you do pretty much need the proper drill & tap.
Like I said, this may not be helpful in this particular situation, but it does save the pickguard and a rewire.
Basically, I just use a small piece of brass hobby stock, like you find at a Hobby Lobby and such, and drill and tap it to proper hole spacing and thread. Then use a cut off pup moounting screw to mount the brass plate to the pickup to make a sort-of T-bar. Then mount as usual. On a trembucker, you'll need to grind a bit of the foot sides off. It's not as hard as it sounds, but you do pretty much need the proper drill & tap.
Like I said, this may not be helpful in this particular situation, but it does save the pickguard and a rewire.