Morning!  I find myself about to start a new juniper bow project (I would just say a juniper bow, but that might be a bit optimistic).  I have quite a bit of bison sinew, a good pile of elk tendons, and a little bit of pronghorn.  Is there any problem with mixing sinew from different types of animals?  I can't imagine why there would be, but thought I'd check with the experts.
Any insights and wisdom appreciated!
Thomas