Replacing Audible Illusion Preamp Feet

Own an Audible Illusions Preamp that will soon be going onto a maple-shelved rack and want to replace the stock feet with brass audio points that I have laying around in my accessory box. Can I unscrew the stock feet without loosening and releasing something internal to the unit such as a lock nut that can't be retrieved and will forever roll around inside and bug the heck out me?