My sister has a HDR and it doesn’t perfectly fit her horse so she uses a ogilvy memory foam pad and a ogilvy jumper pad to reduce rubs!
It’s hard to say without knowing how your saddle isn't fitting properly. Is it too big, lower on the back, too wide over the wither?
Different pads will provide different changes in fit.
I like the Equifit half pads. They work amazing for my english saddle
Thank you both! I will try both and see how those work!!
I find that the le mieux ones work wonders for all my saddles