04 800 HO idle problems

Hi guys I just bought a 2004 summit 800 HO last week. I am having problems with it idling down too far and dieing some times. other times it idles just fine. I have had the carbs off and cleaned them but still the same. moved the e clips to the second grove and it seems better but the dealer tells me they are supposed to be in the third position. any ideas for me to look at over the weekend? we are coming out to the snowys in two weeks and I dont want to be fighting this thig on vacation!! thankd in advance Matt

Thanks guys I think I got it. Cleaned carbs again adouble checked adjustments. No change. Found loose and leaking exhaust y pipe. sealed up with a little lock tite on the bolts idles just fine now. Thanks for the info bob. This will be the fifth year out for me. My group has safety equiptment and survival gear at all times. A quick reminder never hurt anyone though!! thanks again.