If memory serves me right, it has been mentioned that what makes SIS 7 and 8 speed shifters index is the design of the small plastic coverings that go on first over the shifter bosses. Is this correct?
And if so, then would it follow that in order to get my 7speed shifters to work CORRECTLY with my 8speed cassette, would be to get the correct cover to adjust the click throws?
The 7speed + friction move to the 8th gear works pretty well. But it's not perfect. I get odd phantom shifts perodically, usually when I least need them. So getting a correctly matched set of shifters on this bike sure would be nice. I did a search and not much popped up to confirm this issue.
Oh, and if my assumptions above are correct, and anyone knows where they could find me a 8speed boss cover (or full set of shifters), send me a shout!