I´m having trouble getting my son´s 07 Honda 50 to idle very well. During the Fall when we bought it, it ran good but always sounded to idle a little slow to me. Now that it´s sat a few months with out being ridin much during the winter it won´t idle on it´s own at all. I thought maybe it just takes longer to warm up, so I held the throttle back for around 20 min. and still wouldn´t idle on it´s own. Could it be bad gas? Or, just the effect of colder wheather? Or, should I have the carb. looked at and possibly adjusted? Is there something I should try prior to taking it to the dealer?