I have just hive my package and according to some advice as well as what I have read I am to use the smallest opening in the entrance reducer. I made mine with one 3/4" x 3/8" opening and one 4" x 3/8" opening. I notice what seems to be quite a traffic jam at the entrance. Is this normal for a new hive, or are the gals needing a larger entrance? Also I have an IPM screened bottom board installed. should I have the removable mite board removed which is how it now is, or should it be in place. I am concerned about ventalation. Thank You!