<text>  Trainer Aidan OBrien has acknowledged that he is likely to have Ryan Moore riding more of his horses this season. Speculation has raged over the weekend about the likely riding plans for Irelands champion trainer with son and stable jockey Joseph having his first ride over hurdles at Limerick on Sunday when fifth on Egyptian Warrior. Joseph has said that he will be back riding on the Flat on Wednesday at Dundalk but the constant battle with the scales for the jockey who is almost 6ft tall has seemingly never been tougher. Aidan OBrien has acknowledged that he is likely to have Ryan Moore riding more of his horses this season . The Warrior ridden by Ryan Moore on the way to winning the Big Bad Bob Maiden at Curragh Racecourse . Three-time British champion Moore stepped in for three rides for Aidan OBrien at the Curragh on Sunday, winning the maiden on The Warrior. Moores reluctance to move to Ireland has always been an obstacle to a permanent role at Ballydoyle but OBriens desire to secure his services more often is clear. The trainer said: Weve a good relationship with Ryan and we always have. We used Ryan more last year than we did the year before and hopefully it will be that way again this year. Jockey Joseph OBrien right has struggled with weight issues over the past couple of years . Acknowledging his sons weight issues, OBrien added: Obviously doing nine stone has been a problem for the last two seasons and last year it was a big problem. This year hes heavier than he was this time last year. Hell go gently and well see what will happen. Theres no doubt hell come back down to the Flat gently and how far down hell go, well wait and see. Joseph travelled from Limerick to the Curragh to ride in the annual gallops O Brien stages at the track and partnered 2,000 Guineas favourite. The colt is just one of a clutch of Classic hopefuls he can potentially ride this season. Australia gets a kiss from OBrien after winning the Dubai Duty Free Irish Derby at the Curragh Racecourse . Meanwhile, OIiver Sherwood has said his Hennessy Gold Cup winner Many Clouds will run in the Grand National a week on Saturday. The eight-year-olds Aintree participation had been in doubt since his sixth to Coneygree in the Cheltenham Gold Cup. Sherwood, successful with Puffin Billy at Ascot, said: It is always a concern when a race is an after-thought but I still have it in the back of my mind that he did not run his race at Cheltenham . Many Clouds jumps the last on their way to victory in the BetBright Cup Chase at Cheltenham Racecourse . I dont know if it was because we were put out of our comfort zone by the winner or just ran a bit flat. We wont know and until we run next time. Sherwood will be hoping to improve on a poor National record. His four previous runners have not completed and both Sacred Path 1988 and Erics Charm 2010 fell at the first. Court By Surprise ridden by Aidan Coleman clears the last to win the Best Mate Handicap Steeple Chase . The Many Clouds news created a jockey shuffle. He will be ridden by Leighton Aspell, whose place on Dr Richard Newland-trained 2014 winner Pineau de Re is taken by Daryl Jacob. Emma Lavelle, who had expected Jacob to ride her outsider Court By Surprise, is now searching for a replacement. Paul Nicholls, who has six entries, has warned he needs to be convinced Sam Winner is over his Gold Cup exertions and the ground to be soft enough for Benvolio before they are confirmed in his team. 