The same old responses, however the OP is a pony pilot for the most part so switching to another plane isn't a fun idea for him. Also, with the time limits at 6 hours switching doesn't work well for his time period either.
All of these "replies" are fine but if you PAY to fly your favorite plane and it isn't available when you get the chance to play, why PAY any more? This is what I think has his "frustration" level up.