I have a 1990 Cajun (don't know model) with a Force 85 HP motor. I have a couple newbie questions for here. First, what is the throttle friction screw I believe it is called for? it is located by the ignition on the control box. Second, when starting off there is several inches of play in the throttle from when it first shifts til you reach higher speeds, is this normal? Thanks for any help!