So my kids are reaching the max weight for the superlatch and I really love my radian RXT seats..... I just can NOT install them using the seatbelt. I can't get a tight fit at all. I have called diono and honda and car seat install experts and NO ONE can help me. The problem is that my buckle is too tall and so when I try to get the seat tight it hits the belt path and I can't get it tight.... its a VERY loose install. I have tried all the tricks... reclining the seat during install.... twisting the belt (female end) 3 full turns... still not a tight install. I am hitting my head against a wall. I have been researching and reinstalling seats for days... I hope someone can help me!!!