I used to think it was normal for my sled to numerous pulls to start until i went riding with my friend who has almost the exact same sled, his started fine in a lot less pulls than mine. Ive also noticed that when i first take off, it has to get really high in rpms and smokes a lot before it will even move. Also, if it isnt warmed up enough, it will just suddenly die for power after first take off. Once i have ridden for a bit it has plenty of power and takes off like normal. The other reason i made this post is because i recently went riding and shut my sled up to fill it with gas. It was barely shut off for more than 8 mins tops, but when i went to start it took more than one pull and i had to give it gas to get it to go. I did a little reading on hard starts and what i got out of it was that it could be an air leak at several different areas. I am pretty new to sledding so any input would be appreciated! Btw my sled is a 2002 skidoo MXZ Sport 600. I recently put new carb boots on it, it has less than 300 miles on plugs, i cleaned carbs at the beginning of the year and rave valves as well.