Great news about Wall-e's running dog walk! We cut the pool noodle to fit the dog walk, and I put it near the end of the centre plank like I said I would, but Wall-e was still missing the contacts. Then a couple friends came up with a great suggestion (thanks again!!) -- why not put a pool noodle a bit above the contact zone? So we tried it, and Wall-e took this one huge stride into the yellow and hit the contact beautifully! We tried it one more time, and this time he hit it even better, nice and low!!
If I keep the pool noodle above the contact there for the rest of this month, all of August, and all of September -- two and a half months -- hopefully he'll build the muscle memory to stride into the contact. I kept the stride regulators on the A-frame for two and a half month and now he has a great running A-frame at full height.
I'm very excited and very hopeful!