14. The improvement of claim 1 wherein the closure guide and advancement flange form and cooperating receiver guide and advancement flange form allow some controlled splay of about 0.004 to about 0.006 inches for a given torque.
14. The improvement of claim 1 wherein the closure guide and advancement flange form and cooperating receiver guide and advancement flange form allow some controlled splay of about 0.004 to about 0.006 inches for a given torque. 15. The improvement of claim 14 wherein the give torque ranges between about 70 inch pounds and about 110 inch pounds.