I took my ZR 800 out for the first ride this morning...started the morning in the garage with about a gallon of gas from last year that was stablizied..added some new 92 octane...(I filled her up). Was a cold morning...about 10 above...I rode for about a mile and my right EGT gauge was flashing..1100 degrees..(speed was about 20-40 mph) so I pulled the plugs...right side plug was white...check cylinder..was OK... left plug was a good brown color...rode back home at an easy pace...gauges were showing 300-400 on one side and hot on the other...600-900..traveling 15 mph. Went back in the garage..changed plugs..(new ones)..... checked gas lines and gas tank for water looked good???....took another ride about an hour later...went about the same distance...sled started to run rough again...then EGT gauge started to flash again...this time it was my other cylinder that was hot..the left side...stopped again...pulled plugs ...plug was white..other was brown. QUESTION>>>am I getting ice in my carbs...my dealer informed me to drain gas all out and add new gas with some fuel additive...stated I might of had some water in the old fuel...or filled up with some fuel that had water in it.....any takers here for some help..or info. A should also mention take I have a power breather intake and left the cold weather cap covers off this morning....I never had this problem before...also sled was service two weeks ago..