hi Carl
it depends on where the clicking noise is comming from if it is from the motors or rollers it may require a bit of servicing, however if the clicking noise is comming from the control box it is normal when in use, and nothing to worry about, mine has done this from day one. it is the solenoids operating within the box that feeds power to the motors it will do this when it is turned on and if the remote goes out of range signified by the mover stopping as the remote comes back in range it will click a few times and then resume.
colin