insainair2

Hey guys,
Took out the ski afew weeks ago with friends and the ski just had a hard miss. so i pulled it back to shore and pulled the plugs and cleaned them with a wire brush and i ran great the rest of the day. The next day we went back out and the same problem, but i didn't have and tools so we just trailered it the rest of the day and i figured is would just buy new plugs and be done with that problem.
So i got new plugs and installed them, but when i tried to start it in the garage it didn't wanna start at first. Took a bit of fighting with it and it finally came to life, but then it wouldn't wanna shut off...Pulled the kill string and even the inline fuse. Finally i got it to die....So i took the ski out again this weekend thinking at most i would just have a turning off problem. Well now it's even worse.No pickup at all, boggs down real bad and i can bearly even get it started....Im pretty sure it's got a carb problem, so i ordered all new rebuild kits.
But im not sure how the carbs come off...Are they all part of one rail, or do they come off one by one? Im really not even sure if this is gonna fix my problem, but im pretty sure the carbs have never been rebuilt, so i'll start there first