My mare is excelling very well in her training -- we have almost established a good trot -- I feel her using her back, propelling me up. I am now working on the sitting trot for a few strides then I go back to the rising and she keeps the same tempo. It's good, however, whoever owned her previously cranked her neck down and she has a very bad habit of over flexing/tucking her chin into her chest like I am asking her to hyperflex!
I am just now asking for more contact but once she gives it to me and she maintains it for a while I give the rein back (maintaining some contact) but I ask her stretch down through her neck as a break.
When I take up the contact she stays balanced, however, she will begin to tuck her head in even if I am not pulling the rein--I'll give her some slack in the rein and she doesn't release.
How do I correct this?