Slowly but surely Ron's been nibbling away at it. He went to sand the top of the trunk lid yesterday and found something odd. Insidious "creeping rust" which is like little hidden channels of rust that spread under the primer and branch out like a network of little veins. In this case, it was all hidden under the original factory primer. Like cancer in waiting. Anyways, stripped down to the bare metal, chemically treated, and now dressed in primer.