I am familiar with Z's issue since it is the same pond!
This fish Z and I put in were 3-5 inch BG and LMB. Some of the CC were same size and some were up to 8 in. We have walked the perimeter and thrown pellets out in several locations with no response. I will check water temp tomorrow. Before we got the feeder we would hand throw the feed out and had lots of action so we put the dock and feeder there and got a little response which has dropped off to almost nil. We also set the feeder for half the original time due to lack of interest by fish. time is set for 2 seconds.
We have put in several artificial habitat and now we had a tree top fall into the pond, we hand tossed pellets by tree and had some action bt not alot.
As Z says this site is great! Thanks for everyone's input/