As per previous post, I am in the process of fitting an armrest to a New A3 (8P model). I went to the dealer today to look at a car with the armrest fitted, as predicted there is a special nut needed to hold it in place. Problem being the nut is not on ETKA and Audi UK Technical claim that you can't retro fit the armrest so don't seem to want to help. This is really [censored] me off as the part must be available as they use them in the factory. Anyone got any suggestions (preferably constructive ones).