It looks like the limbs are molded glass instead of laminated wood, so you don't have to worry about delamination.

If it was mine, I'd move the cable to the next slot up to lengthen the draw, then twist the string up and keep it hooked in the short draw position to get the draw length back down to where you need it. That would put more prestress in the limbs and get your draw weight back.

I'm seeing a lot of those old wood riser bows showing up lately. Seems like everyone's got one except me. It ain't fair.<img src=icon_smile_sad.gif border=0 align=middle> (sniff)