2nd Nut Flush draw against a maniac

[Gib]

I have played a fair few hands against this maniac
he has some sort of method to his madness though but he loves pumping any draw any top pair & bluffs alot.
I have seen him raise & capped in EP with A8o, 76s, 22, 33. He tends to raise with marginal hands but limps with anything good ie AK, JJ. He has occasionally folded PF but generally plays most hands.

Paradise Poker 2/4 Hold'em (9 handed) converter

Preflop: Hero is BB with K[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">2 folds</font>, MP1 calls, <font color="#666666">2 folds</font>, MANIAC calls, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises</font>, MP1 calls, <font color="#CC3333">MANIAC 3-bets</font>, Hero calls, MP1 calls.

does anyone cap against a maniac? This is the first time I've seen him limp-raise, my first thought is TT-AA or suited broadway.

Flop: (9.50 SB) 2[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, MP1 folds, <font color="#CC3333">MANIAC raises</font>, <font color="#CC3333">Hero 3-bets</font>, <font color="#CC3333">MANIAC caps</font>, Hero calls.

Turn: (8.75 BB) 6[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, MANIAC checks.

River: (8.75 BB) J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets</font>, <font color="#CC3333">MANIAC raises</font>, Hero ?

Okay given the fact he checked the turn, can we assume his on a flush draw as well, but given the fact he limp-raised could we be against Axs? Anyone like 3betting for value here?

Any help would be appreciated

Cheers,
Gib