I ran both my Banshee's same place, same weekend, no problems. My purple bike has 280mains, K&N no lid, 21cc cool head, billet impeller, and just installed PT mids. I run 91 octane straight gas (no ethanol) from a trusted station, and my white one with the mods below.
AND, my fuel was left over from Memorial Day, the 110 was bought from LSPS and the 91 from a local station on the way to our lake, so there is a high turn around on the premium fuel.