Big thanks to this thread!
Did this little mod this morning and could not be happier, feels 10 times better and easier to drive.
Used plastic builders wedges from bunnings which worked well, but would have just been a little better if they were 15-20mm longer, but regardless, it works.
I also bought a timber wedge from bunnings which may have been just a little better fit, but couldn't bring myself to screw timber to the Jeep! My backup plan if the bunnings wedges turned out to be unsuitable was to go to a mower/chainsaw shop and buy those plastic wedges you use when cutting timber to stop the chain bar from being jammed.
Brought the pedal to just below the brake height, which turned out to be exactly the same height difference that my Falcon has - which in the 330k km I've done in that has never felt like a problem.
Thanks for this thread, and If I could work out how to 'thank' posts I would.