I just cut 'em off.
(Newby here) Flyboy probably used that new-age uncoupling device... I think it's called a 'stick'.That won't work if you ever want to use the uncoupling system they're designed to work with.
Every one has this issue at some time or another. It depends if the coupler pin is low because it is not properly shaped, or because the coupler itself is not sitting properly. The first thing I would check is to see if the coupler is mounted such that it is pointing straight out from the car and not drooping. Some cars are plagued with coupler droop (thinking specifically of the Athearn tank cars). Pin bending in this case would end up with curled pins.So I have noticed running on my track that my airlines that hang down from the coupler catch on the track causing derailments. Anyone else have this issue? Would adjusting coupler height be the route to take to solve this issue?
I have read several posts around the internet where model railroad clubs have this requirement as well. Too many issues with hanging pins. (That didn't sound right, somehow?...........)5. cut them off (The museum where I run trains requires them to be cut off because they cause so many problems.)