Hi Tom, my MSO on the Ascend is from Tracker Marine. On the BPS Q&A page it says they are made in Lebanon, MO.
Nathan, I looked at your pictures, the installation looks good. I'd maybe want to mount mine in the smaller pocket because I sometimes set my plano box in the long one. It almost just fits, the hinges cause one side not to sit flush.
I've also been contemplating cutting a hole in the seat back area for a 6" hatch. I saw someone do it while looking at pics on google. I pushed the foam block all the way to the back and put some pool noodles outboard of the scupper hole molds for some more flotation.
I'm guessing you glued the transducer and set the battery in the front hatch area. If I work up the nerve to cut a hole for a hatch in the back I think I'm going to put mine back there. I stuff the front hatch area full with dry bags for camping.
I think I'm going to go ahead and drill out the top of the scupper holes that are molded into the seat area. After swimming I'm sitting in water.