Sweet, well it's suppose to be 70 over Thanksgiving break so I'm not gonna rejet for that, but we're planning a LS trip over Christmas and it might be down in the 40's then I would guess. I would assume 1 size on the main would probably do good for that. I'll be sure the jetting is on now, but I assume it's close seeing as I have ridden it quite a bit and it runs hard and I haven't had any problems.