drilled and tapped may refer to a replacement front cover which must be tapped before installation. Comes with holes present but not threaded.

Don't be surprised by the lack of understanding and care on MB's part. After all, it's just bussiness as usual in the corporate world.
Look how long it took for MBUSA to issue the ML p/s clamp recall.
Can't tell you how many subzero days I was on the side of the road replacing a p/s hose clamp.

Yeah, and how bout those early to mid 90's wiring harnesses?
Can you say "lowest bidder"?

__________________
Scott