need help with leaky trans pan

Good call on the use of the A-500 (et seq.) pan and retainers , plus the new , reusable gasket .
I've always wondered about just that conversion . I see those new-style filtre / gasket kits at work all of the time . I recognise that the new-style filtre won't work --but it looks damned close-- , but that gasket looks bitchin' !