PMDG 738 payload questions

[runibl]

So far I have had no compatibility problems between PMDG 737NG/800/900, PMDG 747, Level-D767, Flight1 ATR 72-500 and Eaglesoft Citation X and
FsPassengers. I use Covoxer's payload models, and it works great, even when I used default I had no problem. I never checked "Disable Position
Calculation" or anything else, it just simply worked.