Thanks for the comments, guys!.
I got a little bit done over the weekend:
The upper hull sides tend to angle in, so I glued strip styrene to help with alignment. The front glacis plate is a tenuous butt joint, so I added more strip to proved a secure gluing surface.
I attached most of the hull fittings and suspension lugs. Stuff like the cranes and cupolas are still loose, as I will put them on after painting.
The little rectangular blocks are mounting points for the cranes that are used to remove the outer sponsons. The recesses molded into the fenders are oversize, leading to gaps all around. If I were to to this again, I would scrape off the molded weld beads, shim two out of the four sides of the recesses with 0.010 strip, sand them flush with the fenders, then add the blocks. The white styrene block was due to the carpet monster. I did find the piece the next day while cleaning the room.
The drum shaped objects were meant to be attached ot the sprockets of the outer sponsons when they were being towed. Infantry were to follow the T28, manually pulling on ropes wound around the drums to actuate the brakes! Anyway, the weld beads are larger in diameter than the drums, and the drums are actually supposed to sit on plates affixed to the hull side. Plan A is to scrape off the weld beads and scribe a line around the drum bases to simulate the mounting plates.
A comparison to contemprary standard Allied armor is inevitable. That's Tamiya's Jumbo Sherman (another "fatally flawed" kit! on the left.) I noticed that on the T28's instruction sheet, the cupolas are shown attached with the hatch hinges to the right. the Sherman has it that way, but I think the T28 should have the hinges facing towards the rear of the vehicle. The Accurate Armour instruction sheet is proving helpful in identifying the parts and verifying positioning.
I really need to texture the front glacis plate so that I can button up the hull. A session with some sandpaper and Mr. Surfacer 500 will follow, to clean up all the little parts that were added. (I just clipped them off the sprue, gave the mating surfaces a swipe with a knife and sanding stick, then stuck them on withTamiya liquid cement.) And after that, it's on to the dreaded bogie assemblies!
Despite all its warts, this kit has got me back onto the workbench. I have had the model doldrums for a while now, and nothing seemed to be able to get me out. I spent most of Saturday building the thing, ignoring stuff like laundry, the yard, etc.