Cape Town - Manchester United manager Louis van Gaal admits his side are still not yet comfortable playing 3-5-2, but believes they are slowly starting to adjust, reports Football411.The Dutchman has come under plenty of criticism for his preferred formation, most notably during last week's trip to QPR when the traveling Red Devils supporters began chanting "four-four-two" in a bid for the boss to change up his tactics.Van Gaal eventually succumbed to the calls and sent out a new formation in the second period, and it quickly paid dividends as United went on to score both goals in the second-half to earn a 2-0 win.The former Netherlands boss, though, says he is left squirming on the bench when his side revert to 4-4-2, saying: "We have won more with 4-4-2 in a diamond, but when you analyse the game then we have twitched on the bench."I have twitched because we were out of balance. All the matches when we play 4-4-2 like against West Ham United (when 10-man United scraped a 2-1 win) it was always twitching and I don't like it."The United boss is, however, determined to make his 3-5-2 preference work, adding: "They are still not comfortable (with 3-5-2). That is very important that they are comfortable. I would like them to feel more comfortable."But we have to do our preparation in the season so we are doing a lot of things during the matches."But we have had a fantastic run of results except Southampton at home. Up to now I am pleased and we are going in the right way."