QUOTE
McMark originally gave me the idea to plate them
I did?
Yay Me!
Regardless of the issues with disassembly and baking, the powder will be TOO THICK on the slides. So you'll end up having to carefully sand the slides after you spent all that time coating them.
If you're a real knitpicker, you could disassemble the whole thing, tape off the slides before PCing so they stay bare metal. But if you're gonna go that route, you should have the whole thing plated first to prevent rust forming on the parts that are left bare metal.
AND.... this part isn't really gonna get beaten or bumped, so paint is MUCH MUCH easier and will work just fine.