Hi Guys,
SO I added some uncouplers from Lionel (Fastrack models) and I notice that some of my cars and locos work great and others don't work at all. I haven't started taking couplers and trucks apart yet but I'm wondering if I need to buy a different brand of truck/coupler combination for those that don't work. The cars where the couplers don't open have couplers that appear to sag and so the metal part that works the uncoupler is already touching the track. This means the coupler won't come open. Any suggestions would be great. Thanks