Vehicles are all placed correctly in the two airplanes you mentioned, even with the last update.
Your problem is likely because you used a custom GSX.CFG for those airplanes, when there shouldn't be any need for it, since they are both natively supported. The release notes for the latest Live Update say that, if you used a custom GSX.CFG for already supported airplane, you should Reset its configuration, in order to use the GSX internal data, which is correct for the latest update.
Also, the Addon Manager should have downloaded and installed one of the 2 GSX Vehicles updates (depending how old was your GSX installation). If it didn't for some reason, you should download it separately and install it, the link is here:
http://www.fsdreamteam.com/forum/index.php?topic=5857.0This includes all the updates to the vehicles since GSX was released. Or, you can just download the full GSX installer, it's the same, just a larger download.