Nah, Bill's been thru worse than this, lol. Kinda like calling Henry Ford to see what size lug wrench you need though, lol. He's been tangled up in these strings like a trout in a gill net for a long time, maybe it will become clear this go round. Most of the Excal guys pretty well know Excal isn't gonna quit selling OPTIONALfff strings as that's what their speed ratings are based on. I'm pretty sure the confusion is a result of Excal putting endless loop dacrons on the new bows vs fff. I know when I got my Emax a year and a half ago, it came w/ fff, but all the new ones I've seen lately have the standard endless loop dacron on. Our pal Henry is like a pit bull, lol.