Decided to leak check with water before putting the back baffles on. Didn't figure I'd find any leak, but better safe than sorry. Filled up the left tank and could immediately see the stream of water coming out the inboard leading edge. The out board is leaking a little too. Obviously not enough proseal in those areas. Right tank passed with no issues. 8/27: rinsed out the tanks and let them dry, then scuffed the areas at the leading edges and cleaned with acetone. Then mixed up about 30g of proseal and worked a nice thick fillet into the nose on each end. Slathered a little on the outside too for good measure. Will check it with water again when it cures. 8/30: rechecked the left tank with water. Passed! 9/1: primed outside of left tank