I agree, Joe. Problem is the joists start out straight, then because of under-sized, they sag (crown-down) over time. Seen this many times when tying in an addition (years later) past the existing exterior wall; either match the existing floor line (not level, but "dished") with the new exterior wall higher than level, or
set it level and let the HO walk up-hill on the same incline they have sub-consciously grown used to over the years...point to show them before starting the project.
PS. The laps are not to code either, good catch; http://publicecodes.cyberregs.com/ic...9_5_par026.htm
Clothes taking longer to dry?
Clean the dryer screen in HOT water if using fabric softener sheets.
They leave a residue that impedes air-flow, costing you money.
Clean the ducting in the last six months? 17,000 dryer fires annually!