2/5 live, flop big draw

[jeffnc]

Full table of 9, live game $2/5 $500

Many players have $200-$400.

Seat 2 $390, decent, a little loose aggressive overall, but will limp into plenty of pots because he knows there will usually be followers
I'm in Seat 3 with $550
Seat 7 $800, is somewhat of a maniac, calls raises with 2 cocktail napkins if he decides he wants to play, raises trashy aces or face cards he likes, pairs and suited connectors, bluffs flops, sometimes with nothing, sometimes with good draws, sometimes all in with draws, but when a lot of money goes in he needs a hand to call. Overall tricky and a gambler.

Seat 2 limps, I limp with 7[img]/images/graemlins/diamond.gif[/img] 6[img]/images/graemlins/diamond.gif[/img], couple more limpers, seat 7 raises to $40, folds to seat 2 who calls, I make a loose call for me because of the potential payoff from the maniac (also, I'm tight, and my image with this crowd is even tighter than reality, so a few times per night I look for an opportunity to balance it.)

T[img]/images/graemlins/diamond.gif[/img] 5[img]/images/graemlins/club.gif[/img] 4[img]/images/graemlins/diamond.gif[/img]

pot about $140

Seat 7 bets $110, seat 2 raises all-in to $350.

Seat 7 could have almost anything he thinks is worth playing - 99, JJ, AT, KTs, JTs, 55, 44, AA, diamond draw, strange bluff, etc.

Seat 2 has to have either a set, AT, possibly 54s, or perhaps a very strong draw here (A[img]/images/graemlins/diamond.gif[/img] 5[img]/images/graemlins/diamond.gif[/img], 3[img]/images/graemlins/diamond.gif[/img] 2[img]/images/graemlins/diamond.gif[/img] although both of those might have been folded preflop to the raise). JJ or better would have been raised preflop by him. A set seems most likely, outside chance of AT or 54 which he would only be playing because he thinks he can play that against the maniac.

Folding seems like a waste of equity, calling seems like weak sauce since I don't want to play a blank turn against the maniac if he calls now. Pushing seems like the logical play, even if I put seat 2 on a set. I might even get lucky and get a call from AA-JJ in seat 7 which would be a big equity boost, even if he holds a diamond. I'm screwed if he has 2 diamonds.