Both front and rear coupler on my Williams By Bachmann GP-38 are higher than my rolling stock. There is also barely enough clearance for it to open so it cannot be adjusted. I tried replacing a factory bent release arm with a Lionel and the coupler wouldn't open. I had to bend the bent WBB release arm straight and put it back in. Remote uncoupler doesn't work because the arm won't go down far enough to release it. Pilot is in the way.