RAFE, I suspect you are in a far better position to know, but this bit:
But last August, Gen. John Hyten, now vice chairman of the Joint Chiefs of Staff, told lawmakers that just six B-1 Lancers were fully mission-capable, indicating the fleet is in much worse shape than was previously known. Some B-1s at Ellsworth and Dyess Air Force bases are so far gone, Nahom said, that it made more sense to take them offline. That way, maintainers could instead focus on fixing the Lancers that have a better shot at returning to flying status, he said.
Really, 10% mission capable? Yes, I know taking new kit and putting it on an older airframe is not trivial, but 10%? That implies some serious structural issues that are not going away.