I also used to own an S2A and used it for nineteen years with no problems. It was pretty loud. I had the 75 mm Nikkor and a 150 Zenzanon lens and both were very sharp ... i really can't tell a difference between the sharpness of those old negatives and those taken with my Hasselblads. I had purchased that equipment through the military exchange and sold it for what I had originally paid having essentially used it for free.

http://www.jeffreyglasser.com/