Robert,
I mentioned this afore the Big Crash, and got around it by tweeking the config to make mine a BBJ2 with all the long-range tanks installed. I even reduced the cargo space so that the model was still correct.
I was planning to do much the same again when I get round to doing the EHB missions (need to finish the Danube tour, do the next stage of the VFRWT, and finish the project I'm on for management... and not in that order I hasten to add) for the fleet BBJ2 (and a PMDG version as well)...