Oops... sort of forgot to update this over the last few weeks.
Magic and me have had some awful schooling sessions which started after i started using a new style wintec dressage saddle on him. It really looked like it fit him nicely unlike the old style wintecs and the Isabell but cleary he just has something against them and just will not relax in them. I think it's to do with how wide the head of the tree is on them, he only likes trees with a super wide head. That added to not liking bits with a mouth piece bigger than 12mm and only accepting double ended elastic girths i have a very picky pony.
I schooling him in his jumping saddle a few days ago and he went lovely, so much more relaxed and stretched down to take the contact when i had loose reins. The last two days he's been lunged in his pessoa.