hi all… question, is there a cookie cutter type layout for the polar express. what i mean is im trying something new. its the helix end of it,what is the diameter of track that i have to use. is it O72 to O36 for the top and how much room do i need to put it up. if i did my math rite i should have enough room for a layout piece 5x5 helix,but im not shur if that would work. please help im stumped and i got 3 weeks to do this. chad