Not to sure of this statement, when the lady died, the line was under RETB at the time, the loco was not testing (route learning run). No problems wilh any calibration (running as i said under RETB, mph, etc). System as had teething problems, and will continue to have. With regards to the 97s, these are being sorted and have currently worked one charter, another running this Saturday. Numerous ballast and tamper moves been done (another move from Mach - Dovey - Coleham, being started in about 4 hours!). A top and tail move all over the line (Track Inspection Coach) running next mon and tuesday (day time).
With regards 'calibrated' it's more than that. it's full fitment of equipment onto the loco/stock and modifications to the cab.