It was my thinking that Linen or Silk did add some Lbs or performance,, compared to denim, burlap rawhide, paper backings... Good to know, I was all fixed up to add some 100% Linen backing to a Hickory ELB for safety mostly but I was a little worried it might add some extra pounds to the bow and really didn't want to re-tiller. Hope this is input and not a hijack.. Thanks Crg