I NEED AN ANSWER>............ just bought a 80 citation ss 370, it worked beautiful for about the first 2 weeks... now it will work beautiful for about the first 20-30 min then it just looses all power.... once it cools down its good to go again, up until the point where it get "hot" or something,,... the only thing i have done is mix a tank of gas and replace the same type of plus, fan works fine...... i dont undersnad..... its storming out and i cant leave the yard,,, any ideas on what the problem is..does it have anything to do with the fuel mixture,, im mixing at 50:1 right now.. thats what the previous owner did..