In my ever-so-humble opinion (having been 'dicked' for a few LEAN events now at Odious) I believe the over-riding problem with the RAF's application of LEAN is honesty.
Simply put LEAN is being used by the RAF to cut manpower and any changes in working processes/improvements are not as a result of the actual LEAN principles but are as a result of the 'can do' attitude of the personnel who are affected by it.
Of course one of the first things the Squadron Bleeder in charge of the LEAN team says on an event is that "LEAN is not about cutting manpower", yet this is so patiently false. In the RAF's application of it this is all LEAN is about.
But don't worry thpugh, because if you can prove a section is already undermanned by using the '8 hour day equals 5 1/2 productive hours per person' formula that is the cornerstone to their calculations you'll get more personnel right? Will you f$%k.