The battery door may stick and be difficult to remove if screwed down tight. Always unscrew the door about "2 hours" from the tight position immediately after installing. The exposure chart will be nicely aligned when unscrewed to the correct point. The door can be unscrewed 1/2 turn without affecting the seal, so don't be nervous about this instruction. Do not use the mounting arm for leverage when unscrewing the battery door.

Some lubricants may cause the battery door and sync cord "O" rings to soften and swell in size making waterproof insertion almost impossible.

The Mount may disintegrate if Loc-Tite is used to install a strobe mount. If the screw used to install a strobe mount protrudes more than 5/8" (16mm), it will pry the mount loose from the body. Our #9577.42 ball (#9577.43 for TLC and Ultra-Lite arms) installs properly. These parts are listed in Strobe Arm Components.

Removal of the battery pack when you travel will assure no damage can happen if the switches are knocked into the "on" or "battery test" positions.