Re: Would a 49.2mm cover fit a 50mm pickup?
You can easily make it fit.
Depending on the tolerances and exact spacing of the cover and pup, you may be able to just take the screws all the way out, put the cover on, then put the screws back in. If you look close, you will see that the holes don't perfectly line up with the screws, but the screw heads hide most of the misalignment and it will work just fine. This may not work, however, but you can just drill out all the holes in the cover a tiny bit, or file the outside edges of the outer holes a tiny bit with a small rat-tail file to make it work.