Having said that out of all the episodes on the DVDs, I can count on one hand the times the sets 'wobble' and even then no worse than Corrie's.
I can see why Peter Ling and the set designer used to get pissed off at the comments, as they are no worse than the other shows, and as Ling himself said - the sets only really wobbled badly in the first 13-weeks when the show was not planned to continue and they were basic flats.
I remember Kathy Staff launching a strong defence of the quality of the sets to a startled Nina Myskow on tv many moons ago.Kathy was always one of the show's champions unlike some of the other stars who could be slightly more irreverent-Tony Adams for one.