The other day on my way back from skool i was stuck in traffic and felt a knock in my pedals shifting form 1st to 2nd. I turned down my music and began to listen didn't hear it angain until like 20min. later. I was once again shifting from 1st to 2nd and hear the knock and also felt it in the pedals. Is my transmission slipping or is it something else ? I really need to know What this might be, cuz i travel everyday to Gwinnett Tech from Henry county for skool.