After installing MSY, and the SAM plugin. If you experience straight jetways, re-launch the sim one more time. This is an issue with the SAM plugin itself and that’s the only way to solve it.
Users will receive this issue if they do not have the SAM plugin installed at the following airports:
KORF, KPVD, KMSY, KGEG.
SAM plugin may be downloaded here: https://forums.x-plane.org/index.php?/files/file/59782-scenery-animation-manager-suite/
Otherwise, make sure you are not missing any objects in the scenery itself. If that is the issue, re download the scenery and try installing again.
This is an issue present with SAM at KORF, KPVD, KMSY, and KGEG; to remedy this, make sure your AUTO selection is on in your SAM plugin. Otherwise, it maybe a scenery issue you can report to me.