I have never needed a shaft on mine but have read a fair amount about the subject. I don't think you will find any specific brand out there but instead you will generally find a marine machine shop that can machine one to your dimensions using the correct stock. The most common that I'm aware of are Aguamet 19 and Aquamet 21. Generally I've heard that the 19 has some attributes that make it preferable over the 21 but you need to ask and look around. I've also seen in the Defender Marine books , an ad for them making shafts to you specifications. One of the newer tricks they use is to cut the keyway with a spoon shape at the start of it to keep cracks from propagating there. That's about all I know and where I would start if I were looking for a new shaft.
Bob, I will keep that in mind as this story plays out. If I switch to 1 1/2" shafts I would need two new props as well. The prop I have now is only a year old so I'm hoping not yo have to replace the starboard side.
I actually just had the dripless shaft seals replaced and this is what started this whole process so switching shaft size probably isn't a viable option.
