I just picked up a 2003 Rev 440 X that has been trail converted at the dealer, but the guy just rebuilt it and put the high compression domes in it. He said it runs great out on the trails with the switch on the bars set at 91 octane. Should I just leave it like this and run premium fuel, or do you recommend getting some low compression domes. I'm just worried about having to run race fuel and not being able to find it on the trails. He said hu just ran premium with the occasional octane boost mixed in. The machine will be used for the trails and that's about it.