How to do it with a HO sound MTH loco

Hi, am posting this as a major pat on the back for Hornby, and the much maligned  Elite Controller.   My new loco, had to be put back to Factory settings, and you cannot do this on Prog track, due to insufficient  power.  As a result, i set Elite to Operate mode and followed very clear instructions.  10 mins later, it was back to 0003, and perfect.  Well done, Hornby. john