I had my forward gear remachined and installed it myself. It ran perfectly for a week then started kicking out of gear again so I tore it down and found the ears had rounded again. I contacted the man that had remachined it and thankfully he agreed to do the work again free but suggested that I didn't have the gear shift adjusted correctly in the powerhead. I'm a poor man so have to do the work myself and would like to get it right. How is this adjustment made? Any help would be greatly appreciated. It's a 1975 25hp Johnson.