I have a notched transom boat with access doors on top of each side. The drop-in storage bins that fit under the doors have cracked to the point of being useless, and without them a lot of rain water drips down into the battery compartment/bilge. Anyone know where I might get replacement bins? Alternatively, anyone figure out how to get these doors to not leak so much? There's a drain channel around the perimeter of the access that the door rests in when closed, so it isn't supposed to leak, but it does...