Changeing my tactic slightly.
I recovered the elevator, really snuging the fabric as I tacked it down, pulling and tacking oposite corners, and then doing the middle, I worked it almost like tourqing a V8 head. It looked real good once I sealed the edges. Then I damped the fabric and used my heat gun. It shrank real nice then relaxed. you good actually watch it relax. Heat will shrink, but heat will also loosen. The fabric is not shifting or slidding at the edges. It is loosening in the middle.
OK then.
Now I did a flap. All control surfaces are the same width except for the rudder (2") wich is 3". I put the fabric on the same way as before. I am really being patient to evenly snug, as taughtly as I can by hand.
Then I very thouroghly damped the fabric. It seemed to tighten up, but as it futher dries I can see a loss of taughtness.
I think I will dampen again and gently heat with the heat gun holding it much futher away.
I also have cut another swath of fabric, but at a right angle to the first cuts. The first cuts were across the salvage (length). This cut is with the salvage (length).
If all of this fails I will go to Joann's and look for some with the lable ofSunline on it.
Thanks for the inputshuck1199