Original poster: "ROBERT L BOZARTH JR. by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jbdetails-at-prodigy-dot-net> So, what is a "sync gap"? I'm about in the same stage in coil building. Well... Ok. I'm just collecting stuff right now. Matter-O-fact, I'm going to go pick up my first NST in an hour. So, I could use advice on how not to ruin it.\ Bob Bozarth