cold weather jetting

[yamaha04]

ok so im wanting to jet my bike for rideing on the ice and trails. im shooting for around -5*c to 0*c thats 22*f to 32*f. my jetting in the summer temp around 25 to 30*C. 280main stock pilot25, toomey needle middle clip?i think. ran good all year plugs looked perfect. mods are T5's, 150psi, boyseen power reeds on ported cages, +4 timeing. air box is on with lid, snokle off and 12, 1 inch holes drilled in the box. oh yeah im between 0 and 300 feet above sea level

[wacko2000]

I had the ame mods and I was running 310 in the winter.with stock pilot and shee ran really good..

just bump the main2-3 to be safe and check your plugs,go from there..