So I have a FT nemesis clone and I've been trying to fix my gritty switch. I've already checked to see if the brass pin is facing the right side up. I've been trying to sand down the button section of the switch (the piece with the train logo etched in), but I'm having trouble sanding down the lower section as my fingers don't fit. Anybody have some idea for me to work around this and go about sanding it smooth?