CNNUT:
The Atlas worm gear on the left and the Bowser one on the right look similar but are not interchangeable.
CNNUT:
The center of the Atlas drive shaft couplings will have to be reamed out to accept the Bowser worm gear.
CNNUT:
Checking to see how everything fits. The length of the drive shafts may have to be modified. This can be done by adjusting the coupling on the end of the worm gear.
CNNUT:
Disassembly of the fuel tank. The tank needs to be shortened and the air tanks repositioned to the ends. The indentation where they were previously will be filled in with sheet styrene.
CNNUT:
The inside of the fuel tank has raised ribs on the bottom and locating pins on the side, both need to be removed.
CNNUT:
I find that it's easier to cut the tank down if it's glued together. Sheet styrene the same thickness as the removed ribs will be glued to the floor of the tank to strengthen it.
