BRIDGETOWN (AFP) - Another absorbing day of Test cricket marked by Ramnaresh Sarwan's 14th Test hundred here was overshadowed amid mounting controversy over the referrals system. The umpire decision review system which the International Cricket Council has been using on an experimental basis again came under the microscope in the fourth Test between West Indies and England at Kensington Oval. The system allows each team a maximum of two unsuccessful appeals of the on-field umpires' decisions in each innings in a bid to reduce mistakes. Teams can appeal the decisions to the third umpire, whose job it is to review video footage and to adjudicate glaring errors and correct them. But this all went awry on the third day of the Test, when Shivnarine Chanderpaul and Brendan Nash suffered questionable lbw decisions following referrals to video umpire Daryl Harper. West Indies coach John Dyson and team operations manager Omar Khan felt hard done by the two lbw decisions which came at a crucial stage in the match and paid a visit to ICC Match Referee Allan Hurst. "One of the great things about cricket is it teaches you to accept all decisions and just get on with the game," Dyson told Sky Sports in a television interview. "I just went down the stairs to have a chat with Allan, and we just wanted to clarify a few things," he added. "I think we're still coming to grips with the whole concept. When you play your whole life with the umpires being in sole charge, but now sometimes find yourself in situations where you can question the decisions, it is hard to deal with." Sarwan batted brilliantly to lead a West Indies fight back and leave them just three runs short of avoiding the follow-on, replying to England's first innings total of 600 for six declared. But Dyson was bothered by the inconsistent application of the referral system. "We were led to believe it was to eliminate the bad ones (umpiring mistakes)," he said. "But what we are seeing is all sorts of tactical decisions (to refer) are coming in. The players are finding it challenging to get used to the system. I think the jury is still out." Hurst admitted the system had been put under severe pressure. "There's no doubt about that," he said. "We've had a number of (referrals), and they have been very close. There have been very difficult ones for the umpire. "The most important thing for the TV umpire is to decide whether there is any conclusive evidence to change the decision. That is always what is in his mind. "This is the protocol that has been in place for three series, and now we are stuck with it. It is not always as simple as saying it is out or not out." Sarwan is not a strong advocate of the referral system, and from the opening Test of the series in Jamaica, where it also proved problematic, he expressed his doubts. He watched helplessly the events unfold from the other end. "I really and truly don't want to comment on it, the umpire's decisions are final," he said. "Like I've said before, I'm not a big fan of it. At the end of the day, we all make mistakes, and I am a strong believer that things would eventually balance out, and would be even. "At the end of your career, whether you get out for the wrong reason, or the right reason, everything will work itself out. And I also find it takes up too much time." Sarwan also had questions about the delivery from James Anderson that dismissed Chanderpaul. "I thought it was high, that is what went through my mind," he said. England spinner Graeme Swann had three successful lbw appeals, including two from the referral system, and was surprised the decision caused such a stir. "I'm a bit bemused that it has been referred to as mad because it didn't feel mad out in the middle, and it's only when we walked off the pitch that we realised," he said. "We felt aggrieved in Jamaica by a few decision, and West Indies felt aggrieved (now), so the system is not ideal if people feel aggrieved by it, but personally, I have no problems, particularly if they are going my way."