I formerly owned a MH and pulled a toad. The hitch was a Class III Reese with the typical "5000/10,000" sticker. But when reading the "grocery bag" of coach owner's information, I found that the coach mfg'r de-rated the towing capacity of the coach to 3500#. When I looked under the rear of the coach, I easily learned why this was. The mgf'r extended the frame in the rear. This extension was 2x4 tubing and supported the weight of a 60-gallon water tank, 5000 KW generator, spare tire, PLUS the hitch and any load on it.
I would assume that your hitch is actually capable of more than 3000#. But just to be safe, why don't you visit a welding/fabricating shop and ask them if they can reinforce the hitch so that it can pull more than 3000#.
2009 Palomino Stampede S195 SD (Hybrid TT)
2010 Ford E-350 Super Duty XLT Extended
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