Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <FutureT-at-aol-dot-com> Justin, Yes, if the gap is way out of sync, the safety gaps will fire like crazy and the NST can be destroyed, kickback can occur, etc. If you're using an async gap, this can destroy NST's too if firings are skipped, etc. John Freau