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 Ozone Tour (27,25"), Prince Michael Chang LB MP, Prince O3 Red, Wilson PS 6.1 Stretch (cut to 27,25"), Wilson Graphite Matrix, POG 110