Yes,  they had cell protectors.  placed just on the outside of the brood area. away from where we suspected a queen would patrol,  but close enough to stay warm and cozy.  WE didn't mark the old queens, as we are not doing research,  but beekeeping. large scale  not 40 hives in a research setting.   Normal variations in queens would make it hard to be sure,  that I understand.  This time,  last years queens were all old dark,  almost black stripped carnis from one producer in CA.  they were mean and pissy.  This batch of queens were all from Miksa and are a bright reddish color  very distinct.  much like a wooten golden queen,  but with a very distinct red face also.  we shall see what color the offspring end up.
These were not double deeps with a ton of brood.  all were single splits  and as far as I am concerned weak splits  with 6-7 frames of bees. 

    On Sunday, June 5, 2016 1:07 PM, randy oliver <[log in to unmask]> wrote:
 

 Nice work Charlie!  I'm curious as to why some get better results than
others--the devil is likely in the details.  I've heard of some using a
cell protector, or wrapping the inserted cells with tape.  Did you (or do
others you have spoken with) do any sort of cell protection?

And exactly where are successful requeeners placing the introduced queen
cell?

>As mentioned the downside was 3-4 weeks broodless.

This downside could be an opportunity to control varroa with an application
of oxalic acid.

-- 
Randy Oliver
Grass Valley, CA
www.ScientificBeekeeping.com

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