OK, I am going to get a TR service manual. What is the best source?
Start here . . . http://www.ricambiamerica.com/index.php?cPath=38&osCsid=b0bb46fe5718630cdadedad13bb36f66
They have the 512 TR Tech Manual. Probably the same, but not sure. Thanks for the tip. I will keep an eye on their site.