Villian is a regular but 3 bets a lot vs me in position...
-Should we going for a 4 bet pre here?
-Stack off or just call on turn?
-is a fold too nitty?

Apparently we are just check folding the flop. The problem is we have a equity and polarity disadvantage on this flop, so we have to deal with it by folding half our range. The thing about your combo is there is no backup. If we had even AJ75 we could proceed, but we just have so many better top pair combos to continue with there is no reason to call yours, especially since strategically we need to shed a lot of hands in our range on the flop so that we can fight back against villain more effectively, both on the flop (when we check raise) and on the turn. Also having KK is probably not great, since we would love for villain to have that hand (or a king high ds rundown) instead of aces.

Having gotten to the turn and making aces up, we are not folding. Your combo in particular is probably a pot. We are potting the majority of our A2s.

PPG is that a solver conclusion to fold flop or your guess?

I would suspect continue is correct for half pot but it does seem close.

And with 2 being a good card, not folding.

against someone who 3bets me a lot i would 4bet pre
you have an ace blocker and clubs

but as played flat flop and fold turn probably

Solver conclusion (as is AJ75 continuing, and A2 on the turn not folding). I guess AJ75 is a bad example because that is double gut, but basically any ace and gutty is continuing, even if it is on the low end.

Thanks.