Understand that PREMIUM is higher octane which retards detonation. Your bike wasn't designed to run on premium and will eventually start to soot up your new plugs. The only good thing about premium is that it has better additive packages. Buy a small bottle of Techron which is the best additive and run it through your gas. The pilot circuits; most likely the pilot jets are gummed from sitting. Seafoam is OK but not all that effective for negating the effects of ethanol.
