[911monty]

Ciao As PW said the main issue is the hardened tool steel in the soft aluminum plug. The aluminum is possibly softer than frozen butter. So make sure you have a good quality hex socket and make sure that the socket is centered well in the plug before applying torque. Oh and use a new crush ring every time.
Now I am going to depart from the specs.... IMO I see no reason to torque that plug to 37 lb/ft. Even though that is spec. Consider that the LN plug is only torqued to 19 lb/ft. The plug only has to be tightened enough to not leak or back out. So I see no reason to go beyond ~25 lb/ft. Aluminum does not go plastic and stretch like steel does, Once yield torque is attained in aluminum it simply yields. Also now might be a good time to Upgade to a LN mag plug. Initially I thought that LN limited torque to keep that way too thin flange from breaking off. Then I came to realize that maybe they were smart and designed the flange to break off BEFORE the pan was damaged!! Genius. Plug is cheap, Pan not so much. As a note I only tighten my plug to 15 lb/ft. It has never leaked yet.