After 2hrs of ice riding, I was riding along in 4th an accidently clicked into 3rd then corrected it right back to 4th. The bike sputtered a bit thn stalled out. It seemed to be out of gas but the kickstarter was extremely hard to crank over. I am expecting the worst but hoping this may be some odd issue. Supposed to ride the ice again today. It was pretty sick. Can anyone help me out? Thanks, A.P.T.