I hope you manage to sort your car out.....I just hope I don't get the return of the coil of death!! Still can't quite get my head around the fault and how it now seems ok just by recoding the injectors, especially as it did not work for you. I have not done anything much more than you other than a new fuel filter, knock sensor (bit of a bitch to get to without a pit)and cleaning the outer surface of the injector nozzles..
Still, if nothing else, I have learnt shit loads about diesel engines
Good luck and hope to see you post some good news soon!!