For over a year I battled with Ollie snatching at the bit and head shaking when I tried to take up a proper contact.  I tried numerous different bits to no avail. Then Jemma came and removed a broken wolf tooth.  Ollie is now a different, and much happier, horse to ride.  Back in the snaffle and two months on we did our first dressage test in almost perfect outline. My pelham is firmly back in storage!