I've never had great success with mylar and novus - although will clean a pf very well.  I bought the TC kit mostly for diamond plate games which it does very well, however it works on mylar quite well too.  I spent about 25 min - about 5 passes in total and I think it came up well.  BUT it does make a huge mess - so ideal to remove the playfield out of game and all playfield parts too.