SMS codes aren't totally useless though, they still stop most random attacks. The real problem is SIM swapping, where someone talks your phone company into moving your number to their SIM. That's when texts fall apart. An app is way safer for that reason alone.

Crown up is the standard way, sure, but it's not some magic fix that levels your floor. Lumber dries and twists however it wants, and a quarter inch over a porch run is nothing you'd ever notice once the decking is down. Plenty of old framers crown them down on purpose so the ends sit tighter at the rim, and those porches are still standing 40 years later. A string line will show you low spots on any run of joists, that doesn't mean the crown direction caused it.

Had this bite me on a 2021 210G last spring pouring a foundation off 494 in Bloomington. The base was on old firmware and the rover kept drifting about 0.15 in the deeper cuts. Everything looked fine on the display until we checked the residuals. We wasted half a day chasing phantom grade issues before we figured the base was the problem. Update the firmware and re-check your radio link while you're at it, because a weak signal will make the same mess look like bad calibration. Takes ten minutes and saves you a pour.