Dance N' Prance Question

[tailrustedtealeaf]

Apologies if this is the wrong thread! It's a little fuzzy since I'm asking about potentially making one, but maybe someone lurking in the corral can help? Hmm.
I've stumbled across the Dance 'n Prance Pony commercial that features the Whizzer pose DnP ponies. I've fallen in love with them, so has anyone:
-Measured the length of the DnP mechanism?
-Ever tried to put one in the Whizzer pose?
-Know enough about the mechanism to have adjusted it for length?
This seems like an unpopular set, so I'm not expecting much!