Just bought an upright Ms. Pac-Man for my fiance.  Looking for a decent, refurbished coin door.  This is my first arcade refurbishment and I'm not comfortable with removing all of the rust on my current.  Also, any tips and tricks to cleaning out the circuit boards would be much appreciated (I'm talking dust, not replacing parts).  By the looks of it, this thing hasn't been treated in many, many years.  Again, this is my first time even opening up an arcade machine, so be gentile with me.

P.S: I've successfully refurbished the control panel, so things are going well so far...