Hi looking for a little advice, my friend has a 14yr old Irish sports horse, she's had him for 1 year and a half, not long after purchase it came to light his feet had not been look after correctly, she's spent the 1st year putting them right, now they are in much better condition she's turned her attention to some muscle damage on the withers, it appears for however long he's either had the incorrect saddle fit or not ridden correctly and lost his top line, began working on an outline end of summer and did see an improvement however with recent weather change and no indoor arena she's not able to keep up the regular exercise and they have dropped again, anyone have any experience or advice on this? He has had various back treatments & a saddle fitter