[930guy]

You may want to investigate the linkage on the trans. There is a snap ring that occasionally fails-allowing the shifter to be extra sloppy and loose a gear or two. But transmission failure is also common. They can be rebuilt but are expensive. Used ones are the more cost efficient way if thats the case. If it turns out that you need one I can turn you onto a yard that specializes in Porsche stuff. Good luck.