I made the original, but couldn't get the air block piece installed, so I had to use black tape to close it up. It has helped with the lifting SO much on this printer. The fan on this printer is the cause of the lifts/warps due to it blowing onto the heat bed. I'm now about to fire up my printer and begin printing your version. I love how you've done ThroughHole with the main shroud! That will come in very handy! I'll post pics when I get it printed!
Any suggestions on infill?