Sorry for your experience,  seems like a burnt combine (no matter the color) is a very sad sight.    Glad the people you deal with are doing what they should.  

 I highly doubt the rotory - static electricity buildup story, but Im not qualified.   Logic would say Red machines should have burned for the last 35 years at a very high rate compared to the conventionals.......    As for the chain, I think a ripper shank would be more beneficial, but, still highly doubt dragging anything would help.

 Good luck, hope your harvest improves!