John,
I think the additional 4 ft being 2K seems like a lot of weight, but I bet the bigger the MH the bigger the tanks. I know mine are fairly large. I have not tested actual holding capacities, I need to do that with the old bucket test. But that was the way they did it in the trailers.
BTW my 76 has rear axle has drum brakes not disk, I think the disk all around started in 77/78.
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Brett G
WBCCI #5501 AIR # 49
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1978 Argosy 28 foot Motorhome
Wise men talk because they have something to say; fools, because they have to say something. -- Plato
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