Don't mean to brag...(well, just a little bit)... But I bought two of these Railking SP GS4 locos for dirt cheap (I do mean dirt cheap, see photo below). The hope was that I could build one good loco from the two.
After messing around with swapping out trucks, switching about shells,reading about the different sounds board,I ended up removing the PS2 board from the better loco and installing a Loco Sounds board. Yes, I know it's a downgrade, but I don't run DCS and I'm honestly still learning the basics.
After about 3 hours of total effort, I was able to get everything put back together and got one complete, really nice looking (seriously looks brand new) steamer going. The whistle and Bell works with my whistle box, and the smoke unit runs (although I've got it turned off for lack of fluid) and I'm just over the moon that I've got another fully functioning loco for about six bucks and a few hours of work.
Eventually I'll learn the PS2 stuff, and maybe I'll swap it back in. But for now, just enjoying playing around with all my loot!