Bruce, there are illustrated directions for drilling out the hidden pin that locks the cylinder in the housing. Try Mike Daily's east coast website
<thatpanteraplace. com>
This was also the subject of an illustrated POCA Newsletter article some time back, by Steve Liebenow of Nor-Cal Panteras. Apparently quite easy once you figure out the area needing to be drilled. Some of the vendors have take-out switches available; call Larry Stock at PPC. I've seen a boxfull there. Only difficulty is, there are maybe 7 different variations of the stock switch. Photos help.