i cant recall who it was...maybe they will reply here if they see this...i believe it...they say you loose more from weight in the center of the string than towards the limbs....not sure why that is. to me id think extra weight in the middle would give you a hair more speed...i dont know...crazy stuff...but it depends on your setup and all that good stuff...

you ever see them "speed balls" or something they sale claiming to give you more speed?? kinda the same concept....gotta tinker and find the sweet spot and the right number of them on your bow and they COULD potentally add speed.

i heard Reflex adds weight to the string to add speed. forget who said that too....lol. but i looked at mine and sure enough its on the bottom of the string near the bottom cam. the person said they are pretty much brass knocks wrapped in plastic shrink wrap. when i get a new string i wanna disect it and take pics....