Glenn, apparantly I missed your earlier posts but thats quite a story there. Another case of Murphy's Law in action.
A competent rebuilder would have caught that immediately because...when the valve face and/or the seat is ground it causes the valve stem to grow 'longer'. Upon assembly the springs are first checked for proper tension at a particular length & then when assembled in the head they are checked for 'installed height'. Most always some shims must be added under the springs to bring this dimension to specs. Ea. one must be ckecked seperately, &, if necessary, taken apart & shimmed. These specs. are available in a shop manual & in a chart form the shim mf'g. supplies. This has been S.O.P. for valve assembly at least since the '30's.
Glad you were smarter than your engine builder & got it corrected.
Doug
