I know they are tapered because I've had mine out before. That does not mean I know of they are the same or compatible with 69 model bolts. Since the xmember is different and I've read that the Lca ' s are different, at least in the bushing.
What I still don't know, is what I asked. If 69 pivot bolts will work in 72 xmembers/lca.
So, thanks for your assistance.