I was faced with the same question - a friends daughter couldn’t reach the rudder pedals but I didn’t want to deal with anything attached to the pedals. Instead I added a third hinge piece about 2” further forward than the two stipulated in the KAI.
Much to my surprise, I actually found that position to be 300% (approx.) more comfortable for me as well. Slightly more reclined, which helps my aching back, and better clearance betwixt my noggin and the canopy. Cheap and easy, and something I wish I had happened across a decade ago.
Total cost: $0.00.
Total time: 15 minutes.