disco try one thing for me. on your test flight disable 0501 base in the scenery layers (just for EGKK flights)
also try putting the egkk scenery layer below orbx and above RANDOLPH like so
Hello.
I am having an issue where the a/c will stop when taxiing along certain taxis ways. Its as if the a/c gets stuck in mud / grass and you have to put full throttle to get it taxi along.
Notice it on taxiway Q