I'm trying to change from 2 wheels to three. Total failure. New steed is a sit-up-and-beg, 20" wheel, tilting steering column, nearside rear wheel drive. I can't master steering the thing. Steering in a straight line is near impossible, as, sadly, is going to right or left in anything like a controlled manner. Perhaps the problem is with the one-sided rear wheel drive? Would changing to front wheel drive be a simple solution? I've managed two wheels for 70 years! Help, please. 36v10amp power.