Bummer Dubbya, sounds like an arrow problem to me also, alot of KE from thembowsbut Im sure you tried that by now.
I got a shooters bow (freebee) some years ago that had mismatched MODs and limbs, Like to drove me nuts. It went back.
Im sure Rob, Matt or one of the otherscould get it straightened out, Robs busting 57X 300s with his, which is awesome for a short ATA, reflexed riser, low BH bow.
Good luck with whichever one you end up with.