I think hand 2 is your big problem here because IMO it's a clear fold. This guy has limped UTG (Sign 1 that he's an idiot with a wide range) and check-called the flop. Think about the range of hands he'd do this with. I'd put it at J7-JK, T8, QT, and a few medium pocket pairs. I wouldn't say Ax is in his range (even though he's a maniac) because a maniac plays too aggressively and checking then coldcalling a bet and a raise is not an aggressive play, therefore he's probably slowplaying.
He then bets the pot on the turn. He obviously wants to get good money in this pot. Now I think we can narrow his range down to a Jack and 99 (unless he's extremely bluffy which is really doubtful).. Which makes this a fold.