I've also had a few ectopic beats. It came to a head last year when they increased to such an extent that I had an Echo and 24 holster. In conjuction with this i gave up caffeine. During the 24 hrs period I was being monitored I had one ectopic beat and the echo was perfectly normal.
For me caffeine was my vice. Leading up to my increased ectopics, I had been drinking a lot of coffee. Cut it out or drink decafe. It works!
Tugger