The PROBLEM is that LE14A's Lansaloy surround was attached on the front with the roll concave, whereas new recone kits have it on the rear, roll convex.
Issues:
1) What to do about the remains of the original surround attached to the face of the cone.
2) Where the voice coil ends up in the gap. Who's in control of that, the spider or the surround?
My answer:
I remove the original surround from the front and install the new surround there, roll convex. Compromise or crap shoot, Rick may know the "right" answer, since it's a unique custom surround....