I just read your slightly old post where you say that you've been able to integrate GTN750 to Twotter. Can you please explain how did you achieve that? I can work out my own way if you give some hints...
Aerosoft released the updated hotfix 1-4 back in Aug 2015. So, is your alternative FDE compatible with the updated hotfix? I ask because the timestamp on your files shows earlier dates, mostly Nov 2014 and Apr 2015.