Bill,
Your lawn mower project sounds like an interesting endeavor (way beyond my abilities). Let us know how it works.
Best wishes on a full recovery from the hip replacement. Don’t be afraid to get a second opinion if you don’t get better soon. My mom’s was misaligned and only after a second surgery (by a surgeon at Mayo who specialized in correcting botched hip replacements) did she recover fully.
L/W
“Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety.” Benjamin Franklin