Kfx 700 has been sunk and dried out completely, changed oil 6 times and gas treatment to get the water out, but keeps missing when it is first started. It will not miss much and has loads of power like when we first bought it when it gets warmed up but it can't rev up a quarter way when it is first started.

 

Not a motor expert by far, but I would guess that the carbs need completely cleaned out. You may need to remove the float bowls and clean any sediment or crap out of them! The dual carbs are a tricky system if they are not cleaned good. Hopefully some of the other technical guys will respond and may have better suggestions as well. Good luck...my son sank his brute and they had to completely clean the carbs!!! I would put new plugs in as well!

 

a little meoh /methonal in the feul may help also to get rid of the water like just a few ounces! if the carbs have a drain on them give then a good drain also and also use some feul treatment that has meoh in it!