I added a triangular former to the lower trailing edge skin . This brought the skin perfectly in place , is much stronger and is now perfectly straight . However , it created another interfeance with the elevator leading edge as it rotates about its hinge axis. This will easily be fixed by running the router on the triangular former with a 3/4 inch cove bit . I will have to remove the stab from the jig to do this prior to installing the closing skins.
decided to modify elevator fairing slightly to remove the interferance . By slightly rounding the profile of the fairing the interferance was eliminated while holding a clean line.