About this 3D model

This is a refinement to this item:http://www.thingiverse.com/thing:3326I am using a tube from home depot that is 5" Diameter X 3.75" HThis is a sturdier part that will fit inside these readily available tubes.Three of the threaded rod lengths should be modified to 190mm or 7.5", the other 4 rod lengths work fine.