Common sense would say no, but that may not be the case. I am gone a lot, sometimes 2-3 weeks at the time. When let set forthat long, I have found my bike can be very hard to start, even with Seafoam in the gas. When it does start, it often starts on one cylinder, and sometimes runs that way for a couple of minutes with the choke off. It can be either cylinder. I have begun to believe that either the floats are sticking, or the needle valves are. After 2-3 weeks, the float bowls are going to be empty, because the gas will have evaporated through the float bowl vent. It is NOT an ignition problem, because I have a good spark to both cylinders. It has done this for years. I am going to try to track it down.