This is an old thread, but it leaves me wondering for information as I am looking at purchasing a 25-5. One poster says to have someone use the serial # to find the date of manufacture. Who is "SOMEONE"? I guess there is a range of serial numbers that might have the oversize throats, but no one seems to want to say what that might be. The one I am looking at is #N804XXX. Can you tell by that number if it falls into the oversize range? I will try to get the owner to let me measure the throats with a set of calipers, but it would be nice to know beforehand.