Welcome to the forums bcs, I have a couple fo 450's , might be able to help you out some , except for the ES as mine are FM's , I am with Shade on the ES subject , if it is not too late , bring it back , I ain't kidding or trying to be mean --------
some people love them and have no problems ( so they say ) , everyone I have ever been around has problems -----one thing I have learned about them is the battery has to be 100% and if you don't have the emergency shifter on your bike , get one , no two , incase you loose one on the trails
The biggest problems I hear on the trails are , I'm stuck in 3rd gear or it won't go into reverse , when they are stuck in gear you can't pull them home too well ---- it is usually no fun when a ES bike rides with us , seems especially at night where they seem to draw more juice for the lights