Trying to disconnect the shift linkage to drop the lower unit. Have pulled the little pin on shift rod and pushed it to the port to disengage as manual said but it will not slide enough to disconnect. The manual mentions different ways for different models i.e. the 60deg compared to the 90deg version. Unsure what sort mine is. Do I need to undo the bolt on the conection piece where the shift linkage from the lower unit meets the shift rod under the carbs to release this version. Looks like a real @#$% to get at. Any help would be appreciated