So I was doing a tuneup and brakes on my wifes car this morning. I replaced the brakes, changed the oil and filters, and attempted to change the spark plugs. All went fine all the way down to the last spark plug. The old one came out fine, but as soon as I tried to screw in my new premium plugs the dam#n alumnum threads in the head stripped out. So I guess I am going to have to remove the head, drill and insert heli coils. Any suggestions?