Thanks Guys.
On reflection I feel I should mention that it is the lever rather than the shaft that I broke.
So now I'm wondering if there is a later lever that is a better replacement for the stock '03 item?
I'm also wondering how long before i will be replacing the shaft too !!
On the shaft, it seems clear that the later item addresses the issue of strength & shaft breakage by different machining of the shaft. Are there any other benefits (function?) of the later shaft? I feel that the swing of the stock item is short.
On the lever, mine broke the aluminum where the socket goes over the stubby steel shaft that the lever turns on (damn it's hard to describe this stuff clearly; wish I hadn't thrown it away in a petulant frezy, I'd post a pic).