Pulling rudder on 36 Wayne beal ,,stuffing box out ,not enough height between top of rudder an hull to clear keel shoe can I stick bottle jack an block of wood an hope to spread keel an bottom dimension or is there a better way? Reason for this is rudder seems to chatter at idle an I have probably 1/8 play between rudder post an shoe is this normal ?fiberglass rudder doesn't seem to be loose or separated on shaft. Am I wasting my time?