Hot Wheels Display Tower

I designed a rotating display tower for Hot Wheels cars. Each car bay measures 100 X 50mm, the total unit footprint is 180 X 180mm, and each floor is 50mm high. The display rotates on a single 6201Z bearing. Print as many floors as you need for your collection.  All prints except the spindle are printed with 2 walls and 10% cubic infill.  The spindle is printed with 4 walls and 25% infill for strength.  The only print requiring support is the top floor and I used tree with a 45 degree angle.  Please rotate the spindle to print with the cylinder pointing straight up, the other prints are orientated correctly.