OK. I'll fess up.
On my first landing in the 29 my hand somehow went from the spoilers to the flaps. I tried to extend the glide by closing the spoilers, but what I did was go into flaps negative. And the ship started falling out of the sky. I figured it out and touched down where I intended, but only because I had 1,000 feet of grass to float over. If there had been trees ...
Robin