i have 2 dover 9 stop duplex traction cars with horizontal selectors,levelling sensors,the whole bit. one of the cars will not cancel up hall calls and at times not even see them. i need to know the selector brushes that see the calls, and the brush that cancels the call. what is the marking on the selector row? the same car will answer down calls with no problem. thanks, phil.

-- phil berio (robbo1026@hotmail.com), January 27, 2005