Got it, thanks very much! I have a Lyman 57K in my box of stuff (not mounted) that requires drill/tap but mounts on the right side like a lot of others that require drill/tap. This one is new to me.

I did see the slight mod to the stock but was not aware the side-plate needed modification too.

May try to find the parts to a 33/34K on e-bay or something before removing it altogether & patching the holes.

Thanks again!