Good info here Rick_Bee. Thanks for sharing the link to the dead out diagnosis sheet.
I follow JC Bees. Jason is one of my go to people to get a practical take on things right here in Ohio. 👍There may be other diagnostic resources for your area.
I have a study that was done for my area.
Check with Jason Chrisman JCs Bees He is an ohio beek and may have more info to share.