Felix,
I am not surprised that you found limbs with a different profile, Bear produced a lot of different limbs, I had a set of 65# limbs that were much narrower on an early Green Stripe. They were quite smooth drawing, but I did not notice more speed than a set of 66# limbs from Grayling.
The Bear flyer, shows a C and B riser, and the B looks different than the Type 1 riser. The handle is similar to the Green Stripe, is this a Type II?