Hi Maine main line, sorry you are having such issues.
I have a suggestion when your trio is disposed of.
PW Lionel 2359 B&M GP9
PW Lionel 2346 B&M GP9
lionel 6-8654 and 6-8655 early (metal gear magnatraction) set.
Williams B&M GP9 Red Box issue (NOT the current silver box Bachman issue)
I have had each of these engines, they have reliable metal gears and drive.
Traditional trains, non sound, non chip are probably going to satisfy your needs.
the Bay has some good deals going on.
best of luck.