I tried priming with royal jelly but I could not see any difference between the results and when I used the Chinese grafting tool, which, as Michael Palmer pointed out, picks up some of the royal jelly. Jay Smith who, being a student of G.M. Doolittle, started out priming ended up deciding that it did not help at all.

http://www.bushfarms.com/beesbetterq...fting%20Method

"We used to prime our cells with bee milk but, after careful examination, believe it was a detriment, for the first thing the bees do is to remove all the milk we had put in. Grafting in bare cells is better-or rather not so bad."-Jay Smith, Better Queens