With names like Jumbo, Riccarton's steeplechase fences are renowned for their size but Hunterville trainer Ken Duncan said the biggest obstacle facing Shamal in Saturday's Racecourse Hotel Grand National Steeplechase (5600m) doesn't need to be jumped. Duncan is referring to last Saturday's 16-length Koral Steeplechase (4250m) winner Tallyho Twinkletoe, the Kevin Myers-trained 11-year-old unbeaten in[...]