As the OP of post #12 mentioned, moving the pedal on the spline doesn't work - in fact, it can't work because the actuating rod length will still remain the same - and without changing the pedal lever itself, it's that rod length that determines the pedal height....
Given that you have a fixed brake cyl piston position; a given length actuating rod; a fixed pedal pivot point (albeit with splines to allow proper positioning for brake actuation); and a fixed length pedal lever...... moving the pedal on the spline is really only likely to mess up the brake actuation, either forcing the brakes to be
ON all the time, or it'll mean the pedal 'push length' probably won't ever fully apply them! :shocked:
So the only real solutions to change the pedal height involve either moving the fixed points at each end, which is sorta hard to do & so unlikley; or to change the rod &/or pedal lever length, and it's a fair bit easier to change the rod length than it is to modify/replace the pedal lever itself - even if it's just by drilling a new hole in the connecting yoke on the end of the rod. :thumbup: