Flying inverted!?! You've got me there. You didn't add main wing flaps did you?
The lower tail looks better, should be flying pretty good....?

That light mod from dystinger looks great!

I got a chance to try out this method for making canopies. It works really
well and works best with thicker plastics like bottles. Now I have to figure
a way to glue it to foam without making a mess of it.