Shoes for the Filler Stand

It is a new original thing I made, but it still is to allow a variation of an existant model. But it is so tiny I would never call it a remix. I printed the Filler in summer and have been using it a lot, rolls easily and allows for a straight feed to the extruder which does help with flexible filaments like TPU. But the axis is not perfectly horizontal, it points a bit down so the spool would always move to the very end. I'm now putting 'shoes' on the feet of the stand to help adjust this. I made 2 versions, one with a depth of 4 mm and the other of 20mm but really, the smaller one with 4 mm is all you need. I designed and printed it for TPU, easier to push it onto the PLA feet of the stand and TPU has a bit more friction so the stand stands better.