wasn't the decu datum switch set to give an extra XX degrees of temp in the combustion chamber?? and then didn't putting the PLA to combat give another XX on top?? Didn't know if the figures were not for public display or not. I do remember when we redatumed all the decus on 11sqn the first 4 ship of monday morning took off with comments of sporty jets etc and came back to 4 sets of double boro's front to back. My mate Billy wasn't a happy sootie.