Hello, though I have loved RightStart for many years, I am considering switching to Singapore Math Dimensions. RightStart was just taking too long -- up to two hours a day if we did warm-ups and played the games. Has anyone done this transition? When I looked at the placement tests it almost seemed like I needed to go from RightStart Level D down to Singapore Dimensions Level 2B since there were some topics covered in SM that were not yet covered in RS...