@ADCX Rob- Thanks. I've seen that video before. All of my switches are installed and I would have to do major surgery to convert them now. I did convert one as a test early on but since it didn't kill the buzz I didn't bother to continue. I'm on the hunt for some K-line 027's (and hen's teeth ) and would start changing out the main lines if I every get any.
I recall another thread about adding a capacitor to energize the solenoid but again, they would need to be converted on the bench.
Bob