When I was a FSI in CMH for recurrent a couple of months ago there were open sim times every day I was there and my instructor said they had not been working as hard for the last couple of months before that. That was in the XLS sim and I don't know about the others there, but the whole sim back log theory doesn't work so well now. I do believe it has slowed things in the past, but that isn't the case across the board any more.