Dukman
In your case Whiskers, I think we're looking at straight up theft. Either Zuhl has been hanging with your ladies and coerced them into a life of crime, or your settlers are pulling pieces off of your armor.
Casanova, err I mean Zuhl stole all the ladies. Hell, I think he even tried that old chair sitting, grizzly looking, loogey spitting hag, and got lucky! He probably got her trained to steal our armor so as to supply Cait's expensive habit. Talk about kicking a guy when he's down is one thing but it's real bad when he kicks 2 guys when they are down on their Power Armor count. LOL
Seriously, thinking about the theft of Power Armor made me think about that "Scavenger" I caught snooping around the work bench and the junk recycle bin at one of my settlements. He was NOT a settler and he was looking very suspicious. I wonder if that may be the reason why we are missing the Power Armor.