Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <MrGizmo28-at-aol-dot-com> At a yard sale I found piece of round plexi (or some other clear plastic) 1/2" thick X 5" id X 22" od and I got it for $5, I think it might work well to lower the occurence of torroid to secondary strikes. Any ideas?