Hi all, I'm new to the forum, but not new to Polaris. I've been riding Polaris ATV's since 1996 when I bought a 400 Explorer. I now own a 2001 400 Sportman, and my son has an RZR 170. My question is about my Sportman. It has about 550 miles on it, and has never been ridden hard. In the last few months I have noticed it has gotten hard to start when the engine is cold. It will start, but I have to hold about half throttle, and it spins over several times before it hits. I changed the plug, but it didn't make any differance. I know the gas is good, and I don't think the compression would be an issue with so few miles. Once running the engine is strong, and will fire back up easily after it hits that first time. Any thoughts? Does this sound like a carb problem or something else?