Unfortunately I am aware of this degradation of quality problem, since I still have some Cal-Scale K brake sets purchased directly from John Anderson in the early '60s (mostly on cars I must admit).
I've been using those sparingly and some of the Grandt ones also. How do I order yours? (Part # & $ to send?)
Max ------------------------------------------------------- email: m_robin@cheatriver.com
smail: Max S. Robin, P.E. Cheat River Engineering Inc. 23 Richwood Place / P. O. Box 289 Denville, NJ 07834 - 0289