Okay, I've checked (in Premiere as well)... my files definitely only have the differences of 27ms (Empire) and 36ms (Jedi).
I got the GOUT rips from TK-949, so maybe he can shed some light on this... but obviously CatBus comes to a similar result. In that case a delay of -25 frames would cause a VERY noticable asynchrony of over a second.