Originally Posted by
supton
Now, I was fitted to my bike a few years ago, so it can't possibly be a fit issue...
So, the question is, if I am aiming to set the saddle higher and back-er deliberately so as to force myself to use different muscles than I normally use, might my knees also feel a bit used as a result?
1) Yes, it can be a fit issue. Your fit isn't a set-it-once-and-forget-it thing. It changes for all sorts of reasons.
2) Your knees might feel better.
3) Put your bicycle up on a trainer, find a good site with suggested measurements, get a friend, a tape measure, and a plumb bob, and start measuring and adjusting. Just make the changes incrementally and slightly ... like maybe 3mm at a time.