you missed out several pointers...
Oh, I'm sure I missed lots of things.
32 pages will make one's head spin.
1) Lethal enforcers 1, 2 and Under Fire are UNPLAYABLE without enabling some sort of cheat, as MAME will NOT allow you to reload, not matter what.
2) Locked N Loaded does not respond to the gun at all. No crosshair, No registered shots, NOTHING.
However, off screen reload does not work in ANY MAME game. It only works for PC games.
I already said Lethal enforcers 1, 2 and Underfire are rendered unplayable. However area 51 and maximum force seem to reload when you repeated press the trigger button (once out of bullets) off screen does NOT work.
I saw you stating this, but curiously Lethal enforcers 1 offscreen reload works just fine for me. Several people said they happily played Area51 although they didn't say if they were offscreen reloading or not. (but what else could they be doing?)
Can anyone else auto-reload for LE2 ,Under fire, or Maximum force, or should I add them to the 'problem' list?
Can people give exact steps they are doing to get offscreen loading?
Are they setting a button to right mouse? or click edge? What about the 'offscreen reloading' setting for wingun?
4) You also didnt address issues with the recoil.
<snip>
Solution? - disable the recoil.
Well I stated that recoil can cause your USB to choke, and no, I don't have any good solutions outside of what people suggested trying. If those don't work, then you're out of luck.
I reworded the 'recoil' section slightly to point you to the 'Other Troubleshooting' section where I had other suggestions.