Newbie PLO question - Do I fold the nuts here?

$.50-$1 PLO on Crypto

I have K [img]/images/graemlins/club.gif[/img]J [img]/images/graemlins/club.gif[/img]2 [img]/images/graemlins/heart.gif[/img]5 [img]/images/graemlins/heart.gif[/img] in the BB

Flop: A [img]/images/graemlins/spade.gif[/img]3 [img]/images/graemlins/heart.gif[/img]4 [img]/images/graemlins/heart.gif[/img]

I bet the pot = $7

A tight player check raises the pot from the SB= $21 more

He has $64 left and I have him covered

I have the nut str8 (which I know is weak on a flop like this in PLO) but I also have a weak redraw to the flush. What is the correct play?

BTW, the SB just called my re-raise and shows A [img]/images/graemlins/diamond.gif[/img]A [img]/images/graemlins/heart.gif[/img]6 [img]/images/graemlins/heart.gif[/img]Q [img]/images/graemlins/spade.gif[/img] and I lose a 46.63BB pot to a K [img]/images/graemlins/heart.gif[/img] on 4th street