I hate to say it but all three of my Ryteras tune with the rest slightly inside center. You do realize, I hope, that the difference between 15/16" and 7/8" is only 1/16", right? I haven't quite figured it out myself, but I have an inkling that the Hybrix cams are not as aggressive as we are led to believe so maybe a softer spine would work better. Don't be afraid to try a 400 spine.
If You're Not Living on the Edge You're Taking Up Too Much Space
Martin/Rytera Staff Shooter
PSAA Life member, UBP Life member
PADI AOW Diver