Has anyone had a problem with one side of the front tire wearing more than the other? My right is wearing more than the left. If you did, what did you do to fix it? Also, is there one vendor that you can purchase all the parts to rebuild the front wheel bearings and seals? I have my front tire off to replace the tire and I figure I might as well rebuild it. Am I wasting my time with only 52000 miles on the trike? Thx Rick