Well, I finally purchased a 2007 sporty for my 18 year old son so he could start improving his skills and ride with good ol pops. The problem is that when he down shifts he complains that the transmission gets stuck between 2nd and 1st. he has to shut off the bike and play with it to get it to work. The scooter only had 700 mile on it when I bought it 3 months ago. had all the fluids changed. Any Ideas on correcting the problem?