I have a chestnut horse with thin skin, and
after discovering girth galls from a string girth, I changed to a Wintec waffle
girth (whatever it's made of) and also set it on the two rear billets rather
than the two front ones. Haven't had a girth gall since. This is on a
traditionally rigged English saddle.
Try Neoprene. If your mare is not one of
the sensitive ones it will solve the problem.
I have never had a horse with a Neoprene problem,
but there are some that can't stand it.
By the way, Wintec girths are PVC not
Neoprene. I just replaced mine one ride to late. After a number of
years, the PVC lost plasticizer and got stiff enough to gall Ranger. I
switched back to Neoprene.
Ed
Ed & Wendy Hauser 2994 Mittower
Road Victor, MT 59875