I have been very impressed with the falconparts guys when I have a question. They are still owned by the guys who started the company because they loved falcons. Each time, I get the feeling they know the answer, and each time I found what they said to be correct-as far as I could tell. It seems like with the MAC's people, sometimes they're reading the answer from the same catalog you are. If you have any question about it, I would email the falconparts.com guy directly- I have always gotten an answer quickly.