I've got a 2000 polaris xcf 440 edge. I took it to the dealer 4 years back and they had to change the jets as per a service bulletin because apparently these motors were leaning out when cold and blowing up. Now, when its -5 celsius and warmer, the sled wont get going from a stop. It just bogs. If it idles for a couple mins, it might get going. When it's colder than that, it runs perfect. My jets are a 340 and a 330. Any help?????