The coils on SCN and Noiseless pickups are so tightly wrapped that even the slightest tug on the cover could permanently damage the pickup. There is also a light adhesive on the cover to prevent accidental movement of the cover and subsequent coil damage. Please note that SCN and Noiseless pickup covers are over-sized and that aftermarket or vintage-style pickup covers will not fit them. It is not recommended that you attempt to change the covers on these pickups.