there are multiple models in the CS767-300 folder I'm sure most are aware...I didn't know this but the pw3 model is an original 300 rather than an ER according to the IDENT page on the FMC. I copied the CS767-300 folder, named it CS767-300ER and went back to the first one and changed the values in the aircraft.cfg to reflect the values of the original 767-300...took a little doing, the Boeing site has all the info.

After a couple of tests...yeah it's not happening...the FMC and AP do not seem to be working right. the aircraft will not reach cruising alt with VNAV. There must be something else that would need to be changed elsewhere but I wouldn't have the slightest idea of where to begin.

any ideas?
Thank you