I did not clean the spark plug threads in the head so that may very well be the issue. I've returned the three worthless plugs to BMW and have received three new plugs to try next time car is in. I'll make sure I clean the threads up.

It looks like they have redesigned the drainage tray at the windshield wiper to keep water off of the last couple of cylinders. Looks like a good design but it looks like it is still that BMW worthless plastic type material that will fall apart after a few years.

__________________
Jim