Adjustable height conduit leg system

This design is used to mount 3/4" conduit legs to the ends of a FreeMo module for model trains. I have successfully printed this object and have them installed on my modules for further durability testing. The mounting slots are sized for #8 sheet metal screws. The bosses are meant to be drilled and tapped 10-24 for a thumbscrew to retain the leg while moving the module.
All parts have been designed to print without support
The upper part of the leg is 3/4" EMT conduit 30" long
The lower part of the leg is 1/2" EMT conduit 20" long
This will make a leg that will adjust from about 40" railhead height for NTrak to the 50" FreeMo height.
The "Leg End" parts should be printed with high infill for strength, as they are press fit (hammer in) to the inside of the 1/2" conduit. You will need to use a tap to thread the hole in the appropriate sized part for a 1/4" (Leg End_250) or 5/16" (Leg End_312) x 3" long carriage bolt.
The "Leg foot" parts are designed to fit 1/4" or 5/16" car