"We give tools and information out to our qualified specialist suppliers who then manufacture our parts to our specifications. On arrival in the warehouse these components go through inspection, and if and when they are found to be in order they are put into stock." That's about all I can find on the AN website about in house inspection, which has to be huge job considering the number of different parts they offer, and what must be a large number different suppliers probably located elsewhere in the world. Some parts that should be caught will inevitably slip thru. More thorough in house inspection would raise their selling prices. I needed to replace a bunch of parts on this gearbox rebuild, and they all would have been tough to afford without the recent dollar to pound exchange rate and ordering them straight from AN in the UK. I hated not supporting Old Britts for the same parts. This is the first of many AN parts I've purchased from both sources for this bike so far that has been incorrectly machined, that I'm aware of. I'm not going to jump on AN about this outer cover, but will be a little more critical of any new parts from now on.