since the dune debacle, lynch has it stipulated in his contract that he has final cut, which includes running time. so i seriously doubt that his films' running times have ever affected editing unless it is for the better of the movie(plus he edits with mary sweeny, his sweetheart for over a decade, and wife of a month). the other lynch book i would highly recommend is 'the complete lynch'. all the rest(weirdsville usa etc) are kinda more "fan" orientated, meaning its pretty superficial stuff. i would also recommend the latest(and longest) book on lynch, 'beautiful dark'. its definitely more of a biography, and has some of that 'fan'ish sort of feel, and yeah sometimes the praise gets a bit fawning, but thats just the lit critic in me complaining. theres a ton of great details in it and well worth the read. lynch on lynch is definitely the place to start, and as of now the best critical piece(unless you want to get into lacanian theory, but thats a whole other can of worms). hope this helps!

Don't know if it counts for censorship....but in mullholland drive when the guy gets shot in the head and his hair burns and freezes in place....his brans were supposed to be seeing flying against the wall and hitting a picture on the wall of a plate of Meat and pasta....then dripping from the picture in a bloody mess.....  (typical lynch awesomeness) and he was told it was too violent and graphic. 

I don't see why this was a problem, being so much more violence and blood is used in cinema.

no they were dunces well before vetoing MD. for many reasons, the handling of TP for instance(even if it was different, earlier abc dunces).