I see Bubber mentioned my name here, but I was going to reply and say that as I recall, they do fit, but you just have to take the metal Piece that they fit in and reverse it.
I have them/similar on my RSTD
Hope you understand what I mean.
Maybe there is a picture of this. I'll look.
OK, it is the ring that is reversed when I/you put these on.
Hope this pic helpsI'll try one more
Guess I just get one