That's what I'm calling my teeter retraining project. The board Max is on has a PVC pipe attached underneath to make a mini teeter. When it tips it makes a really loud bang. We've been working on rewarding the bang with a hunk of stewing beef. When I first brought the board back out I thought it was the tip that Max was leery of but after it banged loudly on the floor and freaked him out I realized it was the bang. We went to putting a mat under the bottom to muffle the bang and now we have moved into the kitchen with full bang for the first time. Max is sitting here waiting to be released (after his reward).
I'm also doing this exercise with Rylie a) because Rylie will not be left out and b) I think Max's tentativeness comes a lot from not regularly practicing. He can't eat beef though so he kind of gets ripped off in the treat department but shhhhhh - don't tell him.