I cleaned the yellow part with an antibacterial dishwashing liquid. I didn't emerse it, just did it with a wet cloth and rinsed. A blowdryer does a great job on the top and fan. Do it outside, though, that fluff goes everywhere. After a couple of runs, I will take the fan guard off and brush it...
I did have a slow hatch on my first go around. I've dropped my humidity a little this time. The pips looked a little close to the end. Are you running the cool-down? I'm getting my humidity right, then will try the cool-down. I will be hatching with this for years, so I'm keeping notes on everything
These will be going into lockdown on Tuesday. My second hatch with the 20 Advance. I got 17 of 19 on the first try. I absolutely love this incubator. I may add the pump this spring, but for right now I can add water every few days to save $140