Wow Ed, I had read James' message and found it logical, but was unwilling to relax the strings and need to retension them (and accept the tuning problem of the stretch factor). Thought I'd check the resonance next time I had to adjust the instrument. Didn't think of damping them. Just tried it and found strong resonances at certain pitches, which I haven't catalogued as I'm yet to cook dinner and answering email. But I've got a strong vibration at C# (not the best pitch to choose), and it seems the secondarys are about a third or so apart. But I'll figure that at my leisure.
Thanks to both of you, James for the instruction and Ed for the simple method. (And James, I'll have to check my guitar also). Best, Jon
