If you see eggs, the queen is there. I don't think you need to obsessively clean off the burr comb, because you are just going to accidently kill bees, and you end up spending too much time with the hive open. I prefer a jar top feeder myself so all they can do is propalise the openings from underneath. It allows you to add more syrup without opening the hive and disturbing them.
!["The Biggest Swarm I've Ever Caught!" - [HUGE swarm catch in beekeeper's backyard] (10lbs of bees!)](http://i.ytimg.com/vi/E5fj0X5Hiq8/mqdefault.jpg)
That's a lot of bees!
If you see eggs, the queen is there. I don't think you need to obsessively clean off the burr comb, because you are just going to accidently kill bees, and you end up spending too much time with the hive open. I prefer a jar top feeder myself so all they can do is propalise the openings from underneath. It allows you to add more syrup without opening the hive and disturbing them.