Hang on a second! can we confirm that you are talking about a mohair soft top, if not and its the everflex then something is amiss.
The Everflex tighten and or stretch but size stays the same whereas the mohair will shrink. If you've had the frame off, go back and reassess. even if its a mohair hood you put it back on the car when wet so it should have been ok unless you had previously left the hood down when damp or wet? then washed it and assumed the wash caused the issue.