Well-I'm thinking this is going to have a happy ending.
Called Panasonic-Mein Gott!!-that was like having a root canal!!
They finally got someone to do some research,and call me back.
They gave me 2 part numbers for Ornaments-they couldn't tell exactly what they were.
Also got 5 part numbers for Panels.
Then,I went online,and found a place where I could download a PDF of the Service Manual.Had to pay,of course,but I got the sucker.
Using this,I was able to find parts diagrams and drawings,and determined that one of those Ornament numbers was indeed the plastic piece I need.
Then,I found THIS site:
http://www.partstore.com/Default.aspx
They actually carry a BUNCH of parts for RAMSA mixers-and tons of other things.
Got that part on order,and am quite happy about it.
I have already filed a claim with UPS-they want me to box it up and let them pick it up,inspect it,and send it back to the seller.
Nobody even cares that I just want it fixed.
I'd imagine this is a cynical corporate decision,designed to discourage folks from bothering UPS any more than they have to.
Several years ago,they damaged an amp I had shipped to me,and an adjuster actually came out to the house.Evidently,they can't be bothered with that any more.
So anyway,this service manual has all the info needed about maintenance,testing,and adjustment-and since I have that cosmetic piece available,I'm going to keep this thing.Even if I find that it has any issues (they say it works perfectly) I'm just gonna keep it and tune it up to perfection.I'm happy to see that a vast number of parts are still available-though not from Panasonic directly.
I only paid 305 bucks for this thing,plus 26 shipping,so even with the hassle involved,I still think I did pretty well.