@Happycube. Thanks for the advice. I did find a lddb'er who'd posted a video on how to fix the d505 and it looks like the same setup so that helps a lot to have a visual reference to look at.

@Mysycamore. The R7G chops everything off above 255. Side 1&2 of SW-JSC have some sort of weird mastering problem on my pressing where the black level starts at 16 even though it has the full range of a Japanese disc. This means that there is white information all the way up to 260-265. On the HF9G I could just extend the luma white point in virtualdub and recover everything. On the R7G I have to turn on d-ext and bring most of it back down under 255 so it doesn't get chopped off by the player. I guess there might be a tiny bit that gets clipped off but it is only in a couple of scenes on the tantive and maybe 1 or 2 elsewhere I think. I've been able to write a script that masks that information and copies it from the HF9G to the R7G but honestly I can't see a difference at all other than I have set the white levels higher on the R7G capture. I've only ever seen this on swjsc side 1 & 2 so I don't think this will ever be an issue on any other disc. BTW, could you do me a favor and let me know if you think the SW&ESB LD's on tradera right now are the Technidisc pressings? Is there a Technidisc ROTJ and is it any different than the 2 previous pressings? I'll probably throw a bid down on it if it's the Technidisc.