First of all, great write-up. Thanks for sharing. Would have been nice to have pictures, but I'm sure you weren't thinking about a write-up at the time you were doing mods.
I have a couple questions, and I'm not very familiar with the inner-workings, so please excuse.
1) The trigger (#3) is connected to the trigger pivot (#2) by a pin (#13). The hole in the pivot is over size allowing the trigger to wiggle side to side and front to back. I drilled the hole in the trigger oversize to accept a larger pin (.090”). This firmed up the trigger a lot. While there is still some movement it is not nearly as much.
What size drill did you use, and where could I find the oversize pin?
2) The blocker lever (#9) contacts the firing pin blocker (#32) raising it just before firing. This causes the slide to move upward in the back right when the hammer is released. I removed the blocker lever and spring (#9 & 21) and replaced them with a flat washer of the same thickness. I also removed the firing pin blocker, pawl and spring (#32, 36 & 37) from the slide. The rear sight (#38) must be removed for this operation. Another benefit of this is that there is a “stack up” of these springs when pulling the trigger. Removing them made the trigger pull a little lighter and kept the resistance consistent for the full stroke.
So effectively you've now disabled the safety feature that prevents the gun from firing when dropped, correct? If so, had you only removed did the first part (replacing 9 and 21 with a washer) would that possibly have kept that feature intact and still helped?
I have made a call to Arthur at Ghost Trigger to see if he will consider supplying a shorter trigger bar for anyone who may want to make this modifications but unable to do it as described. I will keep you posted…
I look forward to hearing about progress on this.