General contractors: what do you need?

[Jordan Kohl]

If you're in the business of managing the various sub-contractors during remodels and flips, I'm very curious to know what your biggest challenges are. I'll go out on a limb and guess that it's currently not finding enough work to stay busy.

What's your biggest headache? What are you wishing you just didn't have to deal with, or could have someone else take care of? What do you wish your clients understood that they just don't seem to get?