Johnny
The solution to your problem of the broken A/C compressor bolts, as posted by ejsharp, seems by far the best advice that you could have. I'm very pleased, now, that I had my A/C bolts replaced, as it seems that it could be a MB design/manufacture fault. My car is petrol powered, and has only done 90,000 kilometres, so it is hardly a problem caused by vibration or age.
Murray Blackwood.