ORIGINAL: Acs_guitars
THE QUESTION:
Have you gotten a badly built, out of square airframe to fly correctly and reliably?
No. Nor will you.
Now, have I fixed airplanes as badly out of shape as you describe, and turned them into good performers? Yes...as it seems you are on track to do. You say you've already fixed a majority of the issues, and, let's face it...the Rascal will be a good bit more forging of some of these issues than other aircraft might be.
I must admit...the biggest worry to me would be exactly what you seem to have left for last...the "drooping" stab. Everything else seems to be a simple matter of location/placement. I'll be interested to know how it comes out once covered.
In any event...no...a badly built, out of square airframe isnever going to fly well. However, some TLC applied by a skilled builder can turn such an airframe into a quality airplane with many good flights in her.
Valuable lesson you've passed along....vow keep us all informed how the restoration goes!

<br type="_moz" />