What's the easiest way to replace two 1U keys with a horizontal 2U key? I'm thinking of installing the 2U "0 Insert" key on the lower-left of the right-hand block of the F77. The question would also apply to converting split backspace to 2U backspace.
IIUC it's feasible, you could load custom firmware that removes the mapping for the soon-to-be-unused barrel. After verifying that works, open the barrel assembly, remove the extra flipper and spring, reassemble, and add the white horizontal stabilizer. It'd be as if the keyboard had been built to this spec at the factory.
But is there an easier way? Could it work to remove the spring, allow the flipper to lie flat, install the stabilizer over the top, and then run with the stock firmware? The stock firmware seems to just ignore keys with missing keycaps whose flippers lie flat. So maybe it's only a quesion of whether the stabilizer would interfere with the flipper.
IIUC it's not a good idea to remove the flipper and run with the stock firmware that still maps the empty barrel to a key, because it could screw up the controller's calibration. At least I think that's what pandrew said:
viewtopic.php?p=504447#p504447
(And if that's the case, it also doesn't seem great to calibrate with a flipper that lies flat.)
My guess is that there's no shortcut here-- the stabilizer looks pretty tall, it looks like it will interfere with the flipper.
Forgive me if this was asked and answered already, I couldn't find it.