That could be it then, i put a reco set of injectors in when i did the turbo with the higher crack pressure. I don't have any idea of how it was running before as i put the temp gauge on after the turbo install.

Is it worth looking at a new rad to try to minimize the temperature creep on the long ascents?

how would this increase the operating temp?
What does the higher crack pressure actually achieve? do they inject the diesel a little later than stock but get it in there faster, better atomization? so advancing the timing offsets this?