I am trying to help an elderly, family friend here in the UK. He has had a variety of electric model trains in his life, including a G gauge set up in his front yard for several years. When he saw my postwar Lionel steam set (from 1952 or 1953), he was so impressed that he has purchased a Bethlehem Steel 0-8-0 switcher set and is now trying to get it set up with a Legacy 990 Command set. Since he is 81 and I am 72, neither of us is very tech smart. Between the two of us, we have managed to get the train to do almost everything. We can make it run and stop, change direction, whistle and bell, make the steam blow off noises, the lights work, etc. But the one thing we haven't been able to figure out is the chuffing noise. We have loaded the module for the locomotive and the remote recognizes it correctly and the train responds. It just doesn't chuff. Any suggestions? If the thing would chuff he and I would be delighted.