I have noticed since I put it on, and put on the 4 inch entrance reducer instead of the 2" they haven't been as active at the entrance like they were...I might move back to the 2" and give them less of a area to protect, any thoughts?
Have you ever noticed how much more traffic there seems to be when a 4 lane highway is reduced to 2 and then how all the traffic goes away when it opens up to 4 again? Maybe what you are seeing is just your perception of less crowding at the entrance. Maybe there isn't a change at all and it just looks that way?
Anyway, I have been told the small hole on the reducer is the "winter" hole and the large one is the "summer" hole. If you are now in 2 deeps, meaning you have at least 80% of the frames covered in your first deep, then I would say it is safe to go ahead and remove the reducer all together. They are plenty strong enough to defend the hive and are going to be getting stronger very fast. Hot weather is coming and you will want lots of ventilation.
I am curious about adding the second box below. I would think this would make checking on new progress more difficult. Is there a reason you did that?