Mate - sorry to hear of your issues with Metal Mule (MM). Your English is fine - no problems.

I recently installed the MM 2 into 1 system and I certainly didn't have a fun time doing it! I knew this to be the case before buying as there are a couple of threads on the issues:
http://www.xt660.com/showthread.php?...ght=metal+mule
http://www.xt660.com/showthread.php?...ght=metal+mule

I'm no mechanic and have access to limited tools only, so I thought my issues may have been exaggerated. However, with quite some patience, profanities and a third hand, I got there in the end. In summary:
- I don't have clearance issues
- The left side exhaust port was impossible to line up
- the link pipes could not connect due to the amount of "weld" inside the pipe that I had to remove - not a problem if you have a dremel tool - I don't.

Once the pipes got red hot, I could re-tighten all of the bolts and it has since settled into place.

On your other point regarding MM not delivering on time; I too have had that same issue. I ordered the exhaust, radiator guard, bashplate and rear rack mid November and was told at the time that everything was in stock except the rear rack, which would be delivered in one months time. I received the radiator guard and exhaust within 5 days, the rear rack in February and I have just cancelled the order for the bashplate as it was confirmed that it won't be delivered before my departure date.

I'm trying to keep the post rational, so I won't comment on the communication from MM.

Good luck with resolving your issues as the only other "bolt on" option for exhaust that gains ground clearance is the Off The Road system that is almost double to the price.