Snowy & Invader Work Well Willie Mullins has two live contenders for the John Smith's Grand National in last year's third Snowy Morning and Irish Invader, who has won his last three starts. "Both horses worked this morning and both worked well," said Mullins. "I think with Irish Invader, even though he has done most of his winning over two miles and two and a quarter, he has won a three-mile hurdle and his pedigree suggests he will stay. "He's a very relaxed horse and that is why we were getting beaten earlier on this season, we weren't making enough use of him. "Since we've changed tactics he's been a lot better so whoever rides him will have to put him to sleep for the first two and a half miles and then maybe ride a race. "He has a tremendous way of jumping, I think he'll love the ground and it's all to play for. "Snowy ran OK in the Bobbyjo but he was beaten plenty. He wouldn't have liked the ground on the day. "With the sun on his back in the last few days and the drying ground I'm hoping he will improve immensely," he told At The Races. The horse for money in the race continues to be 2006 Cheltenham Gold Cup winner War Of Attrition with William Hill cutting him to 16-1 from 20s, despite his welter burden. Hills' spokeswoman Kate Miller said: "Be under no illusions, this isn't just patriotic money for War of Attrition as punters are backing him from both sides of the Irish Sea. "He now rates as the second-biggest loser in the book behind favourite My Will and the gamble shows no sign of subsiding."