OP

Quoted from ChrisBardon:

I did check the PAPA rules this morning, and there's a note in the classics rules that says "Machines used in Classics may include extra balls and/or five-ball play. These features may be utilized by the player unless otherwise posted". It'd be interesting to track which games there are exceptions on.

OP

Quoted from ChrisBardon:

We don't really have a problem with the one flip rule for EBs on most league games. Just about all of our league nights/tournaments are in private collections, and most people don't disable EBs in the software (nor would I expect them to). All the members know about the rule, and since everything is match play, we rely on the groups to self-police. I can't recall an instance where this has been a problem on a DMD game (other than maybe people trying to question the definition of "one flip", but that's a separate thread). Even multi-player EMs are OK, since it's (usually) pretty obvious when you advance/don't advance to the next player that the same player has an extra ball (although sometimes it can be hard to tell, especially if the wrong bulb is out).
I think the resolution for us might be to tackle things on a case by case basis. The general rule might change to "if it has mechanical score reels, play all your balls, unless specifically told otherwise", which can include any of the AAB wedgeheads, but it'll really depend on what we come up against.
Any thoughts on which add a ball games should be removed from play? I've been going through the game notes section on PAPA.org, but I haven't seen anything so far that says whether there are infinite added balls/extra balls or not. Might be a useful thing to add? Either way, I'll probably just start consulting that as we come up against games that I'm not as familiar with.