The picture I posted is just the tip of the iceberg. The bow has similar cracks on both limbs, both sides almost full length. I filled the cracks with urac and clamped but the sinew pulled them apart again as it cured. This is just a bad piece of wood, weak stuff that the sinew could pull apart.
It seems like I tried 3 bows out of different side checked wood staves from different trees, 2 blew, the third is in the picture.