Hi, I just got a 1983 Suzuki LT185, I bought it for $250 and the guy told me it needed carb work. So I took off the carb, cleaned it and it started up, it runs and drives good, exept...when it is in neutral it starts idling at average idle, but then with in 10 seconds it is idling very high, and it makes it very hard to shift gears or anything, I have tried turning out the idle screw but I have it out as far as it will go and it doesnt help any, Does anybody know what the problem might be?Thanks for the help in advance, Clint.