Oh boy, I'm afraid you've routed them wrong. They have to go through a special hole in the carbrack frame more or less opposite the nipples of the T-joints. Means you have to go through the process of sliding them over those nipples again, that is after you have routed them through those holes. Length for tube to carb 3+4 should be 28 cm, for tube to carb 1+2 17 cm. Ideal ⌀ is 5,5 mm.