Ed, I ran it just a few minutes ago, I used, as always Fox 5%/20% castor, it's 25 degrees here, it started right up but had a little trouble idling for more than just a couple of seconds. I changed from a Fox idle bar plug to a Fox Miracle plug and that took care of the shaky idle. I took a shot of the baffles in the Bisson, as you can see they are open on opposite sides giving it a deep, very cool sound.
Temperature 25 degrees MVVS .61 Long Stroke
Fuel Fox 5%/20% castor
Prop==Bolly 12.5x8
Max rpm with Fox Idlebar plug 10,775
Max rpm with Fox Miracle plug 10,825 with steady 2,100 rpm idle