I just started having a problem with my fuel pump not turning on. If I'm riding it for a while and I turn off the bike and try and start it back up the fuel pump doesn't turn on. If I let it sit for maybe 15 to 20 min and try it again pump turns on again. Doesn't seem to do it if I go for quick ride, so it seams like it does it when engine is hot. Anyone have any ideas? ?