I was riding my horse in this same bit for a long time and he was always a bit fussy. He also would do the head cocking thing. I switched him to this http://smile.amazon.com/gp/product/B00DZU75ZA/ref=smi_www_rco2_go_smi_2094485562?ie=UTF8&redirect=true&psc=1
I think the loose ring annoyed him and he prefers the lozenge to the flat link. I also tried him in a happy mouth pelham today and he was FABULOUS. I had bought it for my youngster who is crazypants but I think I'll keep him in his myler and switch Jolly Red Giant to the Pelham