My 360 has a lag when taking off. somtimes when cold when i start to back up or somthing my atv will just rev a bit and then take off. I know there is a little lag but this is a big one. Once it catches it just takes off. what can be wrong. Also, in the warrenty work, will they replace the a-arms because mine has a little bend in it. I was hoping to get a new a-arm. thanks.