Are you sure that the mechanic had the right cones if you have wire wheels?
Internal side the cone is male and outside female. The mechanic must have these dedicated cones. I live in France in a large town, only one mechanic who does restoration of English car has this tooling for wire wheels. If he uses conventional cones (male/male) for modern car with bolted wheels, the wheel cannot be centered correctly.
http://www.mwsint.com/site/cms/contentCategoryView.asp?category=140 
