Anyone have an instruction sheet for the Proto 2000 HO 10,000 Gallon Type 21 Insulated Tank Car? Could you give me a PDF of it? Just not sure where all these tiny parts go. Thanks in advance.

At one particular spot on my n scale layout, I'm having problems with a Kato #4 left switch.  It is powered by DC power and activated by a DPDT momentary switch, like all others on my layout.  I had been away from my layout for a while, and when returned, I found the switch was not working.  As this had happened with others, and they had been "fixed" by loosening them up by throwing the manual throw lever, I tried the same thing here.  However, the manual throw lever was "frozen." I took the switch out of my layout, opened the back and found that