Hi Jim,
Here's what was in the file:
PMB4 Persuader 4-string bass 86F3967
top: Maple
body: Mahogany
neck: 3-piece Maple
scale: 32 medium
fingerboard: Ebony
side markers: inlaid bronze dots
body shape: Vector
peghead shape: Inline
pickup: Alembic P
controls: volume, filter, mono output
finish: Polyester gloss
birthday: April 22, 1986
originally made for: not recorded
There's some complications with changing to a brass plate. The plastic plate is 1/8 thick, so a standard brass plate of 1/16 material will sit lower on the plate shelf, so you'll see 1/16 of the wall of the shelf.
So, the choices are to use a thick brass plate (super heavy!) or build up the shelf 1/16 and use the regular brass plate thickness.