Today was first time I took the new TW on the trails. This is where this machine really shines as until today I only been riding it on the roads. I have a question. I was going up a steep hill and I was in 1st gear. (very certain I was in 1st). I was going slow and the machine made this strange noise, hard to describe but it was like a clunking sound. I would assume it would make this if I was in too high of a gear. Would it make this sound if I was in 1st gear and should be in 2nd? Any help would be appreciated.