To the best of my knowledge - tilt bob is more or less hard coded to the letter 'T'. Once it hit, you should in notepad or any editor, see the 'T' being typed. The mjr plugin, once done correctly, you will get the same amount of tilt warnings as the rom is set to. Often 2 or 3. Without it - it will often tilt on first. I'm 99.5% sure that you should see the letter 'T' being typed. It's been ages since I did this last. Try mapping it to 'T' and see if that doesn't change anything.
Following Wiesshunds advice is valid, but, maybe a bit unnecessary brutal, what I would do is. Delete the registry for the rom only, then run it once. If that works, consider his solution. You should after you delete the registry for the rom, and start the rom once, see it come back. If you don't, then there is some reigstry issues going on and you should definately do what Wiesshund suggests.
What can happen is that you play a game with different settings first time around, and then add some hardware/software and want to change - vp / pinmame isn't bug free and this is windows too
So, deleting the rom entry in question is a good thing to do when something isn't working as you expect it to. Cleaning nvram too, but, that is only game related and not useful in this particular case.
My VPX preferences are configured with T and Button 13 for Mech Tilt. It was what was suggested in the Pinscape Build Guide. The tilt bob is working as expected. With a table open, I can manually move the tilt bob to close the circuit, and VPX will tilt after two to three attempts of doing that (it doesn't tilt automatically the first time). I can also confirm renaming NudgePlugIn_mjrAccelAndTilt.vbs in the Scripts folder to NudgePlugIn.vbs produces the same results as before where analog nudging stops working if that file is present. Without it, it seems to be working fine. I just need to fine-tune my nudging experience. I'll let Steve know about the experience with NudgePlugIn.vbs and see what he says.
Regarding the ROMs, I looked at the registry entries for the Theatre of Magic table (tom_14hb), but I couldn't find anything wrong. It's baffling. It matches with VPinMAME, where F1 shows the Show DMD setting unchecked. Use External DMD and Colorize DMD is checked. The showpindmd entry is enabled in the registry, while showwindmd is disabled.
Per DmdDevice.ini:
[tom_14hb]




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