There has been a little mention on one of the railway fora but I cannot remember which one. ROG were selected to haul both 221s Central Rivers to Worksop separately, and I understand that after one of them was checked over it had bad flats on all wheels. There was talk of it having to have new wheels at Worksop before moving, but it was eventually moved back to Central Rivers as a class 8 movement, which in the olden days was timed for 35mph. As far as I am aware there wouldnm't have been a problem with the pair running in multi under their own power t,o Worksop.