I have recently recieved a 1999 9.9 Evinrude o/b with a long shaft. It has the shaft extension in place. I would like to convert it to a short shaft. I need two things 1) advice and 2) parts. I understand that I will need a short shift rod (318992) and a short drive shaft (341590). Is this correct and does anyone have used parts that could be used? Thanks