I replaced the poly stings that were on it for a 1.20mm syn gut by toalson... a squash string... 55lbs. I don't break 1.30 syn. gut strings often (only once, actually, and it was in fact a multi), so I hope it lasts long enough for me to decide if I want to cap it.
The poly played well after the first 5 or 10 strokes, but I need to try it with synthetic gut so I can get a better comparison. Never went that thin, though...
Prince Classic Graphite 100 Longbody x2
Prince Precision Response 710