I have a newly rebuilt motor and I just rebuilt the deck, replaced carpet, and other items on the boat including the throttle and cables. The boat ran great the first 10 or 12 times out other than shifting felt as if it went into to gear hard at times. The last time I went out the boat started fine but seemed to be idling high. The boat would die when I put it into gear but it would restart. Now at the house it starts again in high idle and I cannot get it to slow down no matter what position the throttle is in.