If you don't want to hear people's opinions, perhaps it's best if you don't post stuff on the Internet?
I have read the post thanks, and at no point have you actually said that you contacted RS after you had the problems with the exhaust fitting sorted by another mechanic. If you don't tell him where he was wrong, what do you expect him to do about it? If nothing else you can rant at the person who's fault it actually was rather than taking your venom out here.
If you wanted more runs on the dyno, why did you not say so at the time?