Thank you Ted,for the write up. I too made those fixes you described.
I made my own gun solenoids,and used images from Hunnicutt's halftrack book,to lead the wires into the mount.
My track is a bit tighter around the running gear,I hid the "joint" in the sprocket area. Also,I used fine fishing line to tie down the track to the sprocket and idler,this helped the overall view.
I noticed there was a top radiator hose,but no lower.The connection point on the engine is there,so I made one from a piece of wire which had black insulation on it. Also I had to fabricate an adjustment bar for the generator,as there was none on the engine.
I suppose for the missing ammo belts,a series of round sections of styrene rod,or stretched sprue glued side by side would be good to use as a substitute.