Wow. I've had some really great rides the past two nights. What a relief. I should mention that I've been poised to try the double bridle under saddle for the first time, but when Willow started resisting the higher frame to such an extreme, I decided to delay the double until we had worked through the new problems. I don't want the double to mask any throughness issues. My new target date for the double is a week from Sunday, if all continues to go well.
I'm having a bit of puzzlement in the canter--something I've never felt before. Willow is cantering reliably in the new higher frame, and most of the time the canter feels really good. We're reliably achieving 12-meter circles, and half pass is starting to come (Yay! She's really listening to the outside leg!). Sometimes, though, she'll give me a few strides of something that almost feels like a series of little bucks, but not exactly. It's like the canter energy is escaping upwards through her croup, as if sometimes she doesn't know what to do with all her new found springiness, and it escapes before traveling over her back. It's really hard to explain.
It's not a big deal--when I feel it, I just send her forward with a good bump from both legs, and the feeling goes away. But I would like to know exactly what is happening. I'm big on theory! If anyone has felt this and had it explained to them, I'm all ears.