I am MU'ing two identical Walthers H10-44 switchers, each outfitted with a factory-installed QSI Q1a decoder. I cannot find any information in the literature on how to make each engine sound a tiny bit different from the other so that it is obvious there are two prime movers working.

I also have some Tsunami decoders that have this available as an option and it really makes a difference in sound when a consist goes rumbling by.

Good evening forum, I need some help with a problem I am experiencing. I just finished setting up my mainline and proceeded to test it with one of my engines. I have a GP 9 from Athearn (3153FW) and when I attempted to run this I would get power in places and some sparking from the engine. I then tried an SD40-2 Snoot from Athearn #4808) and no sparking but the same situation as the GP 9 intermittent power on different areas of the track. I then put my Bachman Spectrum GE 70 ton Diesel (#81108) on the track and it ran beautifully without any issues.

This topic has probably been covered before, but I am wondering if newer locomotive runs form Athearn, Atlas or Walthers have Lead or Zinc Alloy weights inside?  I would like to remove some weight from a Proto 2000 RS27 to add a speaker buy don't really want to grind on a Lead block.  I am assuming that it is Zinc because there are no warnings on any newer packaging but never hurts to asks.

Thanks

Brad