double feed extruder mount

modification to my old double feed mount to hold makergear hot ends. the retainer clamp is to follow. I designed it so you can either mount a single hot end at the center or two side by side. The origional plan was to have minimum clearance between both barrels but i changed my mind because if you bolt two of these together back to back you can mount 4 barrels all at 20mm center to center, wherease having them 16mm between centers then makes bolting them together asymetrical being 16mm one direc