Ian, etal
You are correct: it was a square section 'o' ring.  I have replaced them in 
the past using drive belts for tape recorders and turntables from Radio 
Shack.  They are available in different sizes and cross sections.
Jim Leach,  PTC  Seattle
This archive was generated by hypermail 2b30 : Tue Sep 05 2000 - 08:45:37 CDT