The oven pilot light in our 5er never would light properly. The dealer fooled with it twice with no success. Today I dis-assembled the pilot light from the gas tube. Out fell the small metal seal that is shipped on the end of gas tube to prevent contamination. When I re-assembled everything, tested for leaks, and lit the pilot; the flame was about 4" high!

I turned it down to the proper size, and it lights easily, the first time now.
Then I notice the dealer service tech had been turning the oven temperature adjustment and really nicked it up. Great now my wife is mad because she was thinking she was to blame for burning everything she baked.