Might I recommend synching to the timecoded X0 Project? I've checked, and that has every frame that exists in the Faces/DC edition. So it will be possible to exactly identify any points where the synch might go out, and prepare a master list of adjustments, quoting timecode.

The problem with synching to anything else is that there is no easy way to communicate where to make adjustments for the various versions. We assume that the PAL version starts and ends in the same places, but we don't know that.