I just ordered a new BF 100 to go on my new boat and was wondering if anyone has experience with the variable speed throttle control switch. This is optional on the BF motors to control the throttle at the helm in 50 rpm increments to acquire a slower troll. The part number is 35345-ZZ3-741. I might as well have the dealer install this option when he puts the motor on my boat. Has anyone have experience with the operation of this? Does it work????