I just received my little On30 Trench Engine - Beautiful! It runs fine on DCC, but I have trouble running it on DC/Analog.  It runs on DC, but very jerky. 
How do I correct this problem?

I tried resetting the locomotive to the original factory reset, CV8=2, but it didn't help.
It probably has something to do with the BEMF reference voltage adjustments, which I do not understand very well, and I am unfamiliar with the TCS "Wow Sound" DCC system.

Also, since I am hard of hearing, I would like to like to increase to whistle volume, but I can't find a Bachmann CV reference sheet to guide me in this adjustment.
Can the volumes be adjusted?

Please help me if you can,
Kovaks

   Why is the "L-" terminal point labeled Light 2 "Positive", and the "L+" terminal labeled Light 2 "Negative" on the "HO Sound PCB Installation" instructions?  Shouldn't the "L-" be Negative and the "L+" be Positive?

Bachmann sells DCC Sound boards in the On-Line "Parts Catalogue" for specific Bachmann DCC locomotives but without any wiring.  I'm OK with that, but, Bachmann should provide some instructions for wiring and installation of the purchased Sound Decoders.  I recently purchased two sound decoders for two of my Bachmann DCC locomotives, no wiring and no instructions, just DCC sound boards.

Do I wire these un-wired decoders to the output of the existing PC board, thus replacing only the DCC decoder? - OR - Do I wire these in place of the existing PC board and DCC decoder?  ()

Will the MRC "Decoder Dr." work to adjust the Tsunami® sounds for the Bachmann DCC systems on On30 locomotives? 
I don't know if the Bachmann DCC Tsunami® programming is different from the MRC DCC programming.

Why can't I find any HO scale Alaska RR passenger cars with the blue and yellow color scheme?  I find them in other scales, but not HO.  I find only the locomotives in the blue and yellow, and the McKinley Explorer schemes.