So I rebuilt and re-oiled the dual shock mechanism. I did manage to find the right amount of oil such that I can both mount the housing and fire semi-auto. I was even able to tune it to shoot at a controlled semi-auto rate . . . for about five shots.
I took a video of the problem. It starts out just as I wanted it to; a nice slow ROF. You can see the gun cycling in the video (the air compressor in the background prevents you from hearing it). It starts out slow, picks up speed, and eventually goes to just the hammer bouncing uncontrolled. I can adjust the ROF screw a bit, and again it will start slow and work its way to uncontrolled full auto. Eventually I'm going to run out of adjustment.
My best guess is that I've got an oil leak somewhere? Or did I possibly not fill it correctly in the first place? VID_20120612_182627.mp4 video by aglover_1991 - Photobucket