Thanks guys!! FWIW: this all started in Oct 2005 when I sent Excal a prototype. Didn't clear customs til late Dec that year. I read every page on archives on Excal forum, thinking some one surely had come up w/ this already. Turned out I was the first. I lost my prototype on a hog hunt in La. The dayam thing fell off the scope while xbow was in a rack on back of 4 wheeler. Our pal Henry/Htoler was kind enough to send me a couple that he made up at work. He also kept the faith and what I told him in confidence the whole while, among others. Thanks Henry!! Henry and I seem to be able to whizz each other off more than the rest of ya'll, lol.