My bike has about 150 miles on it. I ride it about 2 times a week so far. Now what i dont get it that the bike seems to have a harder time starting for the first time and then its fine after. I ussually just turn it off by turning the key, but last time i hit the kill switch and then turned the key off. The bike sat for 3 days and then today it seemed to hisitate before it started. Anyone else with this problem? could it be the battery?