Hello everyone..wanted to say first off that this bike is really taken care of,has under 12k miles on her.N-e-ways the other day i was going to the store, once i shifted into 2nd it seems like it has trouble stayin in gear??Its only under hard accel...if i drive normal its not an issue,and 2nd gear is the only one that does it.has anyone had this problem before? What might need to be replaced? thanks