Never seen to HHPs together have have seen two AME7s sometimes on trains coming in and out of south station, not often though.

I was having the same problem and I found this topic: http://www.bachmanntrains.com/home-usa/board/index.php/topic,8419.15.html

I took out them out, and although there are no lights, the HHP can now pull all 3 cars and not just two. Thanks!

Hi all, I recently purchased a used (probably older) UP 2-6-2 at a train show. I test ran it at the show and it seemed to be alright, just maybe a bit noisy. When I got it home, it appears it can only pull its own weight, plus 1 or maybe 2 cars. What do you think the issue is and is it ok if I send it in to be repaired (I've always been very satisfied with Bachmann repair jobs).