Do you have any pictures?
If they have a space < 1/8 " then they will propolise it. If it is a space > 5/16" then they will put comb there.
Is this comb built between the boxes? If so, that is pretty normal, called burr comb. Since we use worker foundation, they need space to put drones, so they draw that wherever they can. You can scrape it off or leave it, they will draw more. Very normal.
If you have extra comb between frames, then your frames are too far apart as JP said.
I agree, don't worry, they've been doing this longer than you have.....
Rick