Upside down mount for A1 external spool holder

I had to remount the external spool holder in my printer enclosure because there wasn’t enough clearance at the top. I modeled it to match the printer frame's profile and added four screw holes (4mm diameter, fits screws with heads up to 9mm). If you mount it to the ceiling, it rotates 90°, but it still works fine with the spool. The spool rim does lightly touch the filament guide arm, but it doesn’t cause any noticeable resistance when rolling.