Re: Tire pressures (again...)
Ok, Jon, this is my take on tire pressures. If it's an independent suspension trike (your's isn't) rear tire pressure doesn't need to be more than about 25psi. On a straight axle trike, anywhere from 16 psi and up will work. Tire pressure on a straight axle trike has more effect on ride quality than on an independent rear end.
Front tire pressures between 38 and 42 seem to work best. For whatever reason lower pressures on the front seem to contribute to tire cupping.
All of this information can, and probably should, be arrived at by your personal riding style. I'm generally considered an agressive rider and run with fairly low pressures on both ends. In the end, it all boils down to what you are comfortable with.
Dwight