JFTDWS
+++ Out of Cheese Error +++
Oh & I disagree about it being easier to train down than up. If a horse is worked correct but slightly BTV into a consistent contact with a longer frame, as they step under more & become stronger it pushes the poll higher & then the frame shortens.
As long as everything is done by influencing the back end then it's no harder.
I would say it's easier to train a horse which has no concept of contact and star gazes than one which has been fiddled and forced BTV though - you don't have to entirely over-write everything.
A horse which naturally isn't capable of supporting an OTV carriage and creeps slightly BTV in a consistent contact isn't the issue for me (and most of the horses in the adverts I've seen lately as so far behind the vertical, it's rather unnatural).