I inherited a 2003 ZR120 that has sat with untreated fuel for a couple of years. It does not idle without choke. I need to pull and clean the carbs. In conversation, I asked my Cat dealer how hard it was and he claimed it is a b**ch and will probably take a couple hours. I was suprised to hear that. Are these that tough and does anyone have step-by-step instructions to get them off and back on? I have a buddy who had a small engine repair shop that is going to clean them once I get them off. THanks.