My shift rod on my 58 Johnson/Evinrude seperated last night while in forward. It threw itself into reverse and has been stuck in that position since. I pulled the lower unit and a piece fell from what I think is the shift knob assembly, and my question is how does the shift rod and shift knob connect? I don't have a manual, and I was wondering if there is a way to get at the shift knob/rod assembly without having to take apart the entire engine so I can fix my little problem.