Bill, Do you use a bit with swivel shanks or do you have solid ones. Both my horses came with the dreaded tom thumb bits. I don't like them either. I do like the Billy allen mouth pieces I'm just not sure what kind of shanks to get. (my horses neck rein)
Sorry if I'm hijacking your thread Darylann...I'll give it right back!
I have a bit like this I have been wanting to try. I'm not sure about the lack of port with the roller. I was looking for opinions before I landed my butt in the dirt.