Where is the feeder located - does it get direct sun? Likely the pipe is sweating inside, just a guess.
I get that you are looking for convenience, aren't we all! LOL
Personally, I have tried a few feeders and have not been impressed with any. Feed seems to get stale or can mold fairly quickly, get clumpy, etc.
I switched to using feed cups a few years back. I got some basic rubbermaid wire shelving, cut that in pieces to make a "rack". Got some feed cups and now just use that.
Cups are taken up every day, they can be washed, I can put dry feed out or wet mash - easy peasy at least for me.
I have 3 separate "runs" currently and use these in all the runs. Birds kept penned separately, I can just hang the cups on their cage.
Just an idea
View attachment 2363427