I assume you are talking about the idle jet? Is it an 80 metrakit on a puch? Your weather should be similar to mine in nebraska. I have 2 metra 80's and my friend has one. We are both running between 82 and 86 main jets and 40 idle jets. The needles are left in stock position. Usually if you are maxed out on your settings you need to change your main jet. I would start going down with the main jet and see what happens. But to answer your question, Yes, in fact in the summer I was running a 35 main jet on one of my kits. I have had no problems and my plug and piston crown tell me the mix is right.