No stats or reads on villain, but he's Russian. I'm obv ahead of his squeeze range pre given that it's a great spot for him to do that with AT+, 77+, and I block primos. If I 4bet, I expect to fold out the hands I dominate and get 5bet with hands I'm flipping with (or crushed by), which isn't ideal. That's why I prefer to flat IP. Flop is gin obv, and I flat again to balance my flatting range and keep it relatively wide (I still have AQ, QQ, KJs as well as monsters AJs and JJ); a raise polarizes me, but basically turns my hand face up because I have very few possible bluffs here given that I flatted a 3bet pre. Anyway, when villain barrels turn big, I'm a little worried. His sizing means that he's almost always got AQ minimum here, if not AK, AJ, or JJ. I'm not doing great against that range. However, there are 4 combos of AQ, 3 combos of AK, 3 of AJ, and 3 of JJ. So basically this is a super tough spot cause I chop with 3/7 combos that don't crush me. I guess I could flat again and fold to a shove on any river that isn't an A, K, or J. But if I do that, I might be getting too good of a price to fold, so I dunno. Thoughts?