Boing and GE are presently dealing with the issue of procurement of critical material.
This why a divestiture of your key ingredient is folly and why the markets should recognize the true synergy value intrinsic in TKR as it is. Below a quote from WSJ article on the matter.
"GE, boing Hunt for Defective Engine Parts"
"The gearboxes were manufactured by Italian supplier Avio SpA, which GE announced it was acquiring in December. The deal, valued at more than $4 billion, hasn't yet been completed.
GE and Boeing also are working to finish enhanced inspection procedures for the longer term.
GE said it is "continuing to investigate the root cause" of the problems, and preliminary indications are that they may stem from defective material."