thanks Bill
looks good. I will also add my molding (which I think has a decent chance of success). I will respond soon with Pics and results.
This is a great forum to trade info on these types of "design bugs" and how to solve. Last year was our first full season with the V348 and we seemed to have vetted out most of the common problems already discussed here.
I do a lot of scuba diving off our boat and this transom locker is perfect for storing 2 tanks during transit! The swim platform on this boat is the best of class, so comfortable for diving. transom shower caps it off great. Always fill my wetsuit with hot water prior to jumping in (water is almost always 45-50deg f at depth up here in new England). Kids love the swim platform. the admiral loves washing them off on the swim platform.
I would say that top "bugs" we have encountered are:
1) transom doors leaking during rain
2) shower/sink/AC sump ( modified to direct out everything but shower)
3) waste tanks and water tank guages dont work (live with it)
4) plugs on generator hard to service
5) some trouble with macerator (still havent fixed but tend to pump out all the time).
6) fuse on windlass footswitch blows easily (as a team we work around)
7) electronic throttles controls were terrible (kept reseting to dangerous settings). Replaced with direct calbe control.

had to replace sun/shade screen on forward berth. screen disintegrated. very costly. no way to just replace screen.
9) speakers in cockpit appears the cones (plastic may have melted or disintegrated. (we just dont blast the stereo and seems fine).
Have we hit on most of the issues or do we have more to learn?