Nope, still no luck with the links, but many thankyous for your suggestions. Here's a pic of the Athearn truck in question. While browsing my collection of files and photos, I did find something similar but made by National as a r/b equipped version of the B-1. The pedestals and axleboxes looked very similar to the Symington, but of course, the bolster area is like the plain-journal B-1, with the two round holes down low - it was in Railmodel Journal April 1990 pg64.
Regards
Paul Woods
Whangarei, NZ.
NYC steam rules the rails at my place!