Hey guys I got a head graphite edge. Its 18x19 in an 81 head, however the string spacing is quite open. My question is, how does something this old school respond to a poly? Or should I stick to soft string. I was thinking about putting some black hyperion in there. I usually use 53 lbs in an 18x20 midplus, so I was thinking 48 lbs for poly in the graphite edge, what do you think?