Instruct: Classify a given review as either positive or negative.
Query: Bachmann GP50 UP

Bachmann has been known to be on the lower quality, entry level side of the model train hobby, and sadly, I think they've gotten even worse.The GP 50 proved to be a weak performer, and started to overheat and severely lose power after only a couple of hours of run time, slowing to a crawl.Headlight is very dim.I opened it up to lubricate it and look for problem areas, and it literally fell apart.The lights aren't even soldered in place; they are simply clipped on and pressed between the chassis halves.The screws and threaded anchors barely reach each other, and the threads wouldn't even hold the chassis halves together!I've thrown it in my parts junkyard, as there isn't much worth salvaging from this piece of junk.Bachmann claims to have a very good warranty policy, but why bother?They're just going to send me another piece of junk like this one.Total waste of money.Not recommended.