Hello! I've a problem! I must built a track but I have not any idea about it! I have 3 floors: the first is 135 x 45 cm (but there is two beams (5 x 5 cm) in it; the second one is 210 x 90 cm (this floor is down the first one and have, also it, the beams in it. then there is a third that I must connect with the first and the second one. here there is a wintrack file..