I put my tracks on today and am trying to avoid some of the problems I had last year. One problem was the 4wd actuator got water in it and quit. This may have been condensation or just seeped in from melting snow around it. Anyway I have the old actuator gutted out and am going to lock the piston in the 4wd position. Is the pin on the front axle pushed into the case to engage the front wheels? Any other ideas?