Hi. I have just started with a new share pony but am finding her saddle so uncomfortable (or I am just not used to it). It is a thorogood part synthetic (I think) and I find it hard to get comfortable and not bounce around too much. Also my feet keep slipping in the stirrups so much, they don't have grips in the bootoms of them, could this be the problem? Was thinking of trying a different pair next time.