Our Monty to miss National Amateur rider Katie Walsh is to miss out on a first Aintree Grand National ride following news that her mount Our Monty is to miss the race. The gelding has suffered a leg infection and his trainer Willie Mullins said "he has picked up an infection in his front leg and it won't clear up before the weekend." Our Monty had been a general 40-1 shot to win the Aintree showpiece.