I am pleased that you appear to have fixed your problem, Harmy. Here is some belated feedback on ROTJ.
* Color correction was generally very good. Colors did seem to vary between shots in certain sequences. At times, I thought the video looked a little too green. Light-sabers looked great! Overall, this is a great improvement on the SE.
* The material that was replaced looked fine. At times, I could tell that material had been replaced, but the quality was acceptable and the result was certainly preferable to watching the 2004 SE.
* There were a few abrupt cuts that could be improved. Most noticeable for me was the quick trim to the footage of the Bantha herd on Tatooine, which as SE additions go I have never minded much. Moreover, Oola seemed to move position in the room quite quickly during the re-edited dance at Jabba's palace. The rest of the editing was good.
This is a great improvement on the 2004 SE. I do think that there is room for improvement, but I would certainly recommend watching this. Thanks for all your work, Harmy! :-)