Two observations:
T-nuts: New t-nuts may be the same thread size but the outer diameter of the shaft/cylinder is not necessarily the same as the original, so you may wind up have to drill all those holes in your new CPR playfield just a little bit larger to accomodate. I've never had a problem with reusing old t-nuts as long as they are removed carefully. Give them a bath in Evaporust or a day in a tumbler and they'll look like new.
Wire guides: the Marco jig will give you corners that are much more rounded than original wire guides. If you want them to look just like the originals, use a pliers with a layer or two of painter's tape around the jaws, so the pliers don't dig into the wire, and bend by hand. They'll look just like the originals. Do a couple of practice pieces till you get the hang of it. I just had to redo a couple on my Space Invaders as the originals broke where the tang was, and a few weeks later I can't tell which were the ones I made.
Springfield, MO
