When I see these threads I always tell this same story so here goes. I have a 67 Pearson Hunter that was given to me. When I got it, it had been hanging by two pegs by the string in a guys basement since 1968, it had the original linen string on it. That was 2001, I unstrung it and replaced the string, other than that the bow has been strung continuously for 41 Years. It says 50#s at 28"s on the riser but when I remove the strike plate it read 52#s. I scaled the bow and it is still exactly 52#s. Leave them strung, I o all the time. Shawn