I have a problem! The piece on top of the starter motor which I will call a solenoid has stopped working and let me know by glowing. I have taken it off and inside the plastic has melted and a couple of insulating washers are broken. My problem is I can see many of these unit parts for sale but none match what I have. My unit has the actuating cable running through it whereas all those I can find have a arm at the side. Any ideas on where I can find a unit like mine or is it possible to fit the other type?