no, you didn't do anything wrong! I was just asking if anyone else had the same problem. In Europe it's very expensive to find just an average mechanic (and I want a goog mechanic to work on my car) and for parts: $35-$40 for just 1 300ZXTT spark plug, It's costing me money just to leave my car sitting there waiting for the part. I had other things done to it, but it's just waiting for that last part.