mountainbreeze wrote:How's the alignment of the two hubs? If misaligned, I'm wondering if this could cause heat buildup in the coupler where it flexes with each rotation.
That was my first thought but, he says the hubs are aligned. If the hubs were not aligned I would think you would have the same heating on both ends. Even more so on the SS end since the head stock does get warm.
This is totally unheard of. I would think that almost 100% of long time SS users will say that the couplers don't break and they have never had one break.