I just purchased a GST and I've put 4 tanks of fuel through it breaking it in. On the 5th tank I decided to get it on the road and see what it will do. I noticed the truck seems to be stuck in first gear. I thought this thing was a 3 speed w/ reverse? I have first gear and reverse but no 2nd or 3rd gear. Can anyone help? Also, does anyone know the correct carb. tune for the GST? How far out on the low end and how far out on the high end? Thanks.