Skibiker said:
... it actually feels like the return springs are too strong I'm starting to think that from a cost point of view it may be best for my wife to leave them be and get used to it.
FWIW. IMO, your wife doesn't "have to get used to it" ... and, you can be (more of) a hero to your wife if the following makes sense to you ...
Presuming the shifters are functioning properly, the solution, IMO, is relatively simple ...
I previously suggested (
which I think fell on deaf ears because of the inability of the individual to understand OR he thought it was too clunky a solution OR the solution was implemented and he never let the Forum know) that a GripShift could be made much easier to use by simply increasing the diameter of the shifter ... that is, ease-or-difficulty of use is a matter of leverage, or lack of.
How large?
Well, a plastic tumbler is certainly larger in diameter than most people can close their hand around, yet we can all grip it, so the diameter of the grip part of the shifter can be significantly larger than the whatever it is (~3cm
?). And so, regardless of your how large your wife's hands are, you can significantly increase the diameter of the grip ...
What to use:
Now, previously, I suggested that the other person simply try using some water pipe insulating foam to increase the diameter of the grip ... tub-and-tile caulk may be necessary to prevent slippage.
But, I might opt for something a which is physically more robust ... and, I might make a donut from wood ... flute/knurl/whatever as desired ... I would then use a slot cut (against the grain!) into the donut + a bolt to compress & secure the donut on the shifter (with-or-without a bead of caulk).
Hope that makes sense to you.