I set up my Black Diamond Freight with TMCC last night and have to admit it is pretty cool. Everything is working fine. The setup I have is a Black Diamond Frieght, TMCC Lock-on, Command Base, Cab-1 and the transformer that came with the train set. The two questions are as follows: 1. Is there any way to put the engine 'to sleep' after shutdown? After sitting still and idling, I put it in shutdown sequence and the engine goes through it's process and sounds to shutdown - no engine idle and main lights go off. But the aux lights stay on and there is a 'buzz' coming from the engine. Is there anyway to completely 'kill' the engine with the TMCC and then re-activate when I want to use it or do I have to actually unplug the electrical source? I assume the 'buzz' is normal because of the speaker in the engine and the voltage still going thru the track. 2. Is there any way to adjust the range of actual engine speeds for each RPM sound level? At rest, the sound is idle, and as soon as any power is applied, the RPM sounds go to the next level and then thru to the top RPM level well before getting close to top speed. Is there anyway to make a particular RPM sound remain for an extended speed range? I know you can adjust the RPM level manually using the TMCC, but prefer it to be done automatically. Thanks!!