Thank you very much, All!
Actually, I got this one (32, not 04 like I posted originally).
Myler Mullen Barrel Dee Bit MB 32 - Dover Saddlery.
I tried it yesterday and she seems to respond better, but somehow she also seems to go faster with it. :) I originally was thinking about Mikmar full cheek (have another thread on that), but just liked the look of this one better. Dover said they don't mind me to try and exchange, but I think I'll keep it. Lol!