The entire cabs are rebuilt, improved sound proofing and anti vibration measures are installed during this over haul program of the slate grey repaints. Most of the 071s going around are heavily corroded around their cabs. 072 and 073 are currently in a very bad way in this regard. Drivers have reported that it has made big improvements in the cab conditions for them of the overhauled 071s compared to the existing locos yet to be worked on.