The actual Wiki entry made no mention of the subject at all as I wrote.
Later today Wednesday I find this: in the Iconic Aircraft Aviation Forum dated Monday September 19th by 34053 "just when you thought that it could not get any worse:
Latest News is that Scotsman's Boiler is to be lifted off the Frames! The main 'Frame Stretcher' (the horizontal steel sections that hold the two sides of the Frames apart) has got to be replaced, due to serious cracks (!) having been detected. These stretchers weigh about half a ton and it was considered 'easier and more economical' to replace it, rather than trying to carry out a repair job. The saga continues!"
After a media call at Bury on the 30th September more news is available. An example of the reportage giving a good overview comes from Railway Magazine.