Reply to "Soldering to Gargraves Track"

I suspect you have Stainless mixed as noted above.  I had zero issues soldering to my Gargraves or Ross tin plated track.  For the blackened rails, I used a Cratex wheel to knock off the plating to solder to those.  For the tin outside rails I didn't do anything but apply heat with my Weller 100/140 gun and feed solder into the tip.  For old track, you might need to scuff it a bit to solder it, all of my track was new out of the box as well as the switches.