Man, counterweight drops will eat your whole morning every time, ironworkers got priority on the swing no matter what. Best move is to stage your pavers somewhere the operator can see before he starts, then snag him the second he's clear.

How thick is the square tubing you used, and did you fill the legs with sand or anything? Curious because mine has a slight ring to it when I hit the anvil just right. That wobble at hip height would drive me nuts if the stand wasn't super solid, so I'm wondering if you braced the legs at all or just ran them straight down. Also what did you use for the top plate where the anvil sits, just flat bar or did you notch the tubing? Steel prices around here have been nuts lately so $140 for a full stand actually sounds about right.

500 days is a long time to keep at something that is not giving you what you want. My question is about the app itself. What exactly does the 10 minute routine have you do? If it is mostly standing and reaching for your toes, that alone may not get you there, because hamstrings need longer holds and some work on the hips too. Ten minutes a night might be too short for your body, or you might need to hold each stretch for a full minute instead of a quick bounce. Have you ever tried a seated forward fold with a strap or towel around your feet so you are not fighting your own reach?