RAC1812, No , I briefly considered it but decided against it, below is my "update".
Well, my attempt to "drill" failed when the bit "walked" so its off to the friend with a bridgeport mill ..... For fun, I started working on the 2nd SM420 I have and the lock pin drove in with no problem. Using a .250 (1/4" ) drill I was able to determine that the hole for the lock pin is parallel with the top of the case so that's a big plus.
