I just drove my trike home today. It is an Adventure IRS kit from Motor Trike. I haven't that many miles on it yet, but have had the opportunity to give a couple of neighbors a ride around the block. The kit has an on board air compressor. With additional weight, I just stepped up the pressure a few pounds to equalize the ride, and away we went. The air compressor switch is where the memory 1 or 2 preset memory switch was located.
I haven't been able to get it out on the freeway yet, but I can say @ around 60mph, it is stable and rides very nicely. I am really pleased with the kit. It is really a good ride.
Unfortunately I have to go to work tomorrow, and it will be a long 6 days before I can climb aboard.