Well, we pulled out the partially submerged TH feeder and got to work. Emptied feed, spun fan, but still wouldn't drop pellets Finally I hit it hard several times to try to knock loose any clumps in the bottom unit and lo & behold, IT WORKED!
Refilled, reset, and now it's doing just fine. Thanks to all for the helpful advice.
RBT still biting, I'm surprised to say. Guess it's been a cooler than average spring. HSB tearing them up, we've caught several in 5 to 7 lb range. CNBG doing well, too. LMB a little slow, but then we've taken out 125 the last two weeks so maybe that has something to do with it.
No cormorants. Nesting geese have left without goslings, maybe the raccoons got to the nest. Pond slowly returning to normal levels after big rain event, viz still murky but gradually beginning to clear.