Don, you can get a riser to raise the throne. Camping World and some RV dealers carry them. We put one on our prior toilet and the 2 1/2 or 3 inches of additional height made far more difference than I thought it would. It cost about $25 and was a ten or fifteen minute install.
http://www.campingworld.com/browse/p...=1569&src=SRQB is the one we got.
Gitrdun, I'm apparently even more dense than usual today. I'm not sure what problem you are having. We first hold the pedal down halfway (single pedal toilet) to get lots of water in the bowl, then push the pedal to let it flush. That 'power flush' usually works for us. I'm not sure if this addresses your problem or not.