Harmy said:
I never corrected any garbage matte lines, but if you mean matte boxes, then I "corrected" those through colour-timing only and did so because under ideal conditions they wouldn't have been visible in cinemas in 1977 - so again, just trying to preserve/restore the original movie-going experience.
You need to get used to that some people will never grasp why those garbage-mattes are so often visible on video. ;)
Keep up the good work you're doing Harmy. :)