1xAIO is pushing it
If it beaded great after the #26 and then stopped beading it means that the #26 was gone cause it's what caused the inital beading. The other thing is #26 a cleaner wax? Did you let the
AIO cure for a day? Just some cosiderations.
Klasse doesn't always bead, but it's there.
When I use AIO only, I use 2-2xAIO coats in non-consecutive weekends. I have a few cars on that system of daily drivers that are going strong this winter.
Too bad AIO didn't work out for ya.