DOES ANY FELLOW KNOWS IF I CAN CHANGE THE 50%
VALUE IN THE FUTABA 7 UPS (SUPER 7) FAIL SAFE F/S FUNCTION SETTING?

I'm not sure this will help you but there may be directions in the manual. If you don't have the manual, you should be able to acquire one here:

http://www.futaba-rc.com/manuals/index.html