"Shrinking" a Dressage saddle seat?
I got a Stubben Parzival Dressage 17.5" for Christmas (can't WAIT to ride in it!) and I was a big curious about the seat size. When I sit in the saddle I feel secure and it is comfortable. Where I sit in the saddle, I can fit about a hand and a half behind be (big, I know), but my legs are in the right spot; my knees are where they should be. I'm not going to be doing actual Dressage, just flatwork and Western riding. When I ride I normally either walk/trot the barrel pattern or work on an obstacle course at a walk.
When I ride in a Western saddle, I normally ride in a 14" or 15". My thigh is around 18" long.
Is this saddle way too big? I don't think being a little big would be an issue, but would this size be an issue? Is there anything I could get to shrink the seat a little?
I was looking at getting a tush cushion thing that is like 1/2" thick.