One of my team is a 5 year old gelding, and VERY playful. He is an excellent and reliable worker, but likes to fiddle and play anytime he gets a chance (especially when standing and waiting at all). The biggest issue I deal with in harness is that he loves to turn his head to the inside, frequently getting tangled in the lines. I have to watch him constantly, and it is a bit annoying to continually have to correct him. It only seems to disturb his teammate if he actually does manage to tangle in the lines, because then he winds up pulling on his teammate's bit as he turns his head away. He uses side-check reigns that seemed to be adjusted properly in that it prevents him from dropping his head too low to get caught on a snap or something. However, he has free side-to-side motion to do as he pleases. How can I solve this issue? Is there something I can safely tie on the outside of him to prevent this turning to the inside? Thanks in advance!