Double delight for Jackson and Rothwell at Down Royal Shane Jackson has enjoyed a great start to his professional career this season and brought his tally to ten winners when teaming up with his boss Philip Rothwell for a 35/1 double with Twocute and Grangehill Dancer.Jackson (20) sent Twocute to the front two out in the Martinstown Opportunity Handicap Hurdle to beat Rugged Man by four and a half lengths.´I´m delighted for owner Gavin Kinch who has been with me since I started and has enjoyed plenty of success before with Palouse,´ said Rothwell.Jackson completed his first double half-an-hour later in the two miles beginners chase where Grangehill Dancer was prominent throughout and went clear on the run-in to beat He´s My Man by seven lengths.´That´s her fifth career win but her first over fences and it gives me a great thrill as she´s been second so many times,´ said a delighted Rothwell.Dun Doire is on course for the Grand National after the evens favourite opened his account for the season in the featured Tennent´s No.1 Chase.Bobby McNally´s mount had his task greatly eased after chief market rival News Item fell at halfway, and he headed Romaha two out before going on to beat that rival by three quarters of a length.´The ground is very tacky and it would have been better to get a lead till the last as he pricked his ears after hitting the front. That should set him up nicely for Aintree,´ said McNally. Silent Creek, a promising second on his debut at Gowran Park last month, went one better in the opening two miles maiden hurdle.Alan Crowe´s mount jumped to the front two out, and stayed on well under pressure to beat Fall O´ The Hammer by three and a half lengths.´He surprised us a bit at Gowran and has improved a good bit from that run,´ said Christy Roche, who reports Far From Trouble in ´a race against time´ to make the Grand National.´He got an infection from a prod in a foot joint when over in Cheltenham and has needed a lot of antibiotics. It´s going to be touch and go to get to Aintree.´Ben Adam and Theboyfrombulawayo had a protracted battle in the two and a half miles beginners chase, with the latter eventually coming out on top under Mark O´Hare by two lengths.Agus A Vic overcame a mistake two out to take the hunters chase, leading before the last for Jason McKeown to beat Howryafeelin by nine lengths as the pair went clear.Caramia stayed on gamely under pressure for Diane Duffy to get up close home in the bumper.