Can you send me more information regarding the leveling of the bed? It was something that I was thinking of. Here is a pic of the Y-corner blocks I made to. It's made out of 3mm aluminum square tube. the holes are drill 10/20/30/45mm from the bottom up. The top hole that the smooth 8mm rod goes into was first drilled right through using 6mm bit, the only 1 hole drilled using 8mm bit. Then I want to drill and tap the center of the smooth 8mm rod so i can put a bolt through the Y corner block and into the smooth rod, helping stabilize the smooth rods to the whole frame. Not sure if it will work out, but I'll try it.

I'll hopefully be getting the motor and idler mounts as well as some linear bearing this week then I can start assembling.