PaperTRW posted:The scale Class A was produced once, but I believe the LionMaster version was manufactured at least twice. The TMCC versions used a cherry switch, whereas the Legacy version gets the chuff info from the motor driver board.
This is one of those times where one really needs to provide the 6- Lionel number to receive the best advice.
TRW
Interesting - I once asked Mike Regan about a chuff issue on a legacy Atlantic. He stated the first chuff was produced by the micro switch. Then the motor driver board thereafter.