Ok so I want to update this thread for future posterity :-)
I never found any wet foam or wood so I decided to move the batteries. My main goal was to get weight off of the starboard side in general so I didn't put much thought into the benefits of moving them forward too. It helped a lot. Now it's much easier to get the bow down low - just a bit of tab. I can also trim the motor out further now which helps get rid of the steering pull I get when it's tucked in.
Moving the batteries didn't entirely eliminate the stbrd list. I wanted that gone so I stuck a 60lb bag of tube sand behind the port rod box. It sits perfectly now and I don't notice the extra weight.
I guess when I assumed that there was wet foam on the stbrd side I didn't consider the combined weight of the steering, helm, gauges, swim platform and trim tab pump. That's all on the stbrd side while the port side is clean. Upon reflection all that could easily add up to the 60 lbs in the sand tube so it looks like the wet foam concern was really a myth all along.
I was originally going to run the three battery cables behind the stbrd rod box. When I got them they were 28lbs! I wasn't going to put that weight back on the stbrd side after all this so I put them across the gas tank. That straighter path meant that I had enough slack in the 14; cables to mount the batteries to the front of my fish box vs the rear as was my original plan. That worked out well too...
Thanks everyone for your advice and suggestions. I really appreciate it.
