Your best bet is to add admins to steam friends. We aren't on all the time since we do have real lives and plans that change day to day. There is an admin on at almost all hours of the day, just not logged into a server, or if they are logged into a server, they are only on one of four IBIS servers.
If I'm on ZMod I've always been happy to hop over to help players on other servers. Likewise, if I'm doing something else and still logged into steam I'll generally log in to help as well. Most admins will be happy to help. 5:10am is late (or early) for most of us, I know that I got admin because I was playing at that time quite often and wanted to make sure the servers weren't abused in those wee hours of the night. Maybe you should get admin to insure that there will be an admin on when you're playing? Especially if you're on often at that time.
Yeah. I'm an admin. What of it?