I'd just like to thank Wookiegroomer for uploading the corrected audio files that fix the low level center channel issue on The Empire Strikes Back (BD50).
Keep up the good work!
I second that. Many thanks Wookie Groomer, it's much appreciated. I can't do anything with it for a week and a half as am on holiday but I'm hopeful that a kind soul will explain how to mux this into the existing DB50.