I decided to design new bed leveling knobs from scratch after yesterday printing a bunch and finding out that none of them fit the far adjustment knob properly. This final design was my 8th iteration and I printed 6 prints before deciding on what fit perfectly, and then adjusted for the maximum size that would fit - on the back adjustment knob. A fair amount of work went into this design, even though it's pretty basic - so I hope you get some use out of it!

This ended up being more complicated than I first thought however the final print works perfectly and I will be replacing all 3 of my adjustment knobs with this design!

Note: Flip the design so that you print it with the flat cutout on the bottom. Then to attach it to the stock knobs, just remove the knob entirely and slot it into the print.