I have a Mercury Seapro 10HP outboard that I have snapped the main drive shaft in, Is there a way to tell if it's a short leg or long leg outboard? the part number of the short leg drive shaft is 42192 and the long leg is 42193 which I found on Boats.net, the length of my broken drive shaft is about 25 inches long so I am looking at confirming that it is the short (42192) drive shaft I need. The serial number of the outboard is 0D099116. Does someone know which drive shaft I need?