I was able to easily obtain the feet at Home Depot and get them pushed in with a vice. Printed in Hatchbox Black PLA. 205/200 hot end , 65 / 60 bed.
If you look closely you can tell I had some leveling issues that were affecting my prints. I used hot glue to keep them in place while I leveled things out and put teflon tape on the threads to keep them from rattling out of adjustment.
In the end I have opted to not use them, instead I placed the printer on a thick tile for a flat surface which I bought at Home Depot for about $1.50 . Not as adjustable, but it serves my needs.