Originally Posted by
PeteHski
In contrast, for me, adjusting the saddle fore/aft by 5 mm can literally make no difference whatsoever to my seated speed up a 12% grade.
This might indicate that your fit isn't quite in the ballpark. For instance, say your fore/aft is off by 20mm. If you adjust it by 5 mm, you're still off by 15 mm, so there probably won't be much difference. Whereas, if you're off by only 5 - 10 mm, you should notice a difference. (This assumes saddle height or bar positioning isn't significantly off . . . one of those could be the reason, too.)