PlanePower 60A Alt Failure Mode - Loose back cover screws ? Looking for Serviceable Part

[AZSteve053]

I recently experienced a non-heat related PP 60 Alt failure (2016 Alt new purchase, 2019 started Flying, 340hr TT), appears the back cover attach screws (3) somehow worked loose (guessing), allowed arcing from diode pack, melted cover around screw holes - Graceful failure with volts and Amps dropping from 14.1Vdc to 12.1Vdc and 18 amps to 0 amps over a 6 second period of time. Field CB & 60A main output CB did not trip, slight burning electrical smell noticed coming from cabin heat opening to cockpit (likely generated during final Arcing in death throws).
Would love to find a serviceable cover so I can return alternator to service after installing new diode pack & regulator/brush assy... Anyone have a spare cover sitting around ?
Direct Message works well, I'm in central AZ.