Well, my E70 does not have the coolant pipe leak issue yet, but my E60 sure does along with leaking valve stem seals and clogged secondary air ports. So, I just negotiated a deal with AGA for all three solutions and the valve cover gaskets for about $1800 shipped. Includes: transfer pipe, air port cleaning kit, and valve stem installation tool kit with seals. I will still need to purchase new secondary air valves and other misc. stuff. ...can't wait!