Power in a MH is very subjective. Most folks say they have "a lot of power" or it "feels under powered on hills" . I would post what your HP rating is and its weight. Also if you do a 40-60 mph test at WOT and post results you can see if there is something wrong with the MH or if it is just what that MH is capable of doing based on HP to weight ratio. As a data point my friend had a 5.9 diesel bounder 34 ft and it took 22 secs to go from 40-60 mpg. I felt it was under powered but it was brand new and that was the best it could do. I just tested a 2002 40 ft CC for a friend it had 370 hp and weighed around 34,000 lbs or so (the owner did not know the weights) it took 20 secs to go from 40-60 mph on a flat slab. If you post your HP, Wt. and 40-60 time folks could give you a more accurate answer if something is wrong or not.