Firstly, I would like to say that Wookiegroomer is a legend for making the fan edits available in such great quality.
I obtained the first version of V and was entranced by how great it looked. I noticed a sync issue but ignored it. Subsequently I obtained IV and VI and also noticed issues.
It was quite costly in bandwidth and time obtaining IV, V and VI and I am very reluctant to toss them away and obtain the final re-issues unless it is the only way to obtain "perfect" copies.
Alternatively, would it be possible to obtain the correct audio delay and demux and remux the files that I have, to correct the sync issue? Or, is the sync issue not one of a constant offset, but variable and therefore not amenable to simply applying a delay to the offending audio tracks?
IMHO it's well worth downloading the proper releases of these.