Original board in the foreground, new smaller board in back. Note the red thingy on the new board, that is the much smaller 0.1MF cap. It replaced the smaller of the two caps. I also found a smaller 1MF cap that replaced the large blue cap and much smaller 5K pot to replace the big pot. I trimmed a half inch off the far end of the board and about a quarter inch on each of the other sides.
Potting, using black RTV silicone. About ten seconds after taking the pic, I realized I should have just continued with the hot glue for potting instead of the black goo. When the goo sets, I'll cut a hole for the heat sink(big sucker, ain't it)in the cover and pop that into place. Then finish potting.
BTW, I spent some time on the American Science & Surplus website and sprung for an adjustable 12V/1A power supply. No more using the battery charger.