
Two things.  The adjuster(trimmer) on an Executive doesn't "unscrew".  Think of it as a windshield wiper - it only has about 170 degrees of effect range, then you are back to the begining of it's range.  So, make a small mark on one of the corners of the little square driver and on the face of the trimmer, and nudge it slowly, say the distance from 12 oclock to 1 oclock initially, then smaller steps as you get closer.
Possibly you have and auto-set movement in a case with a magnet set back(many supposedly left the factory that way.  Test: tap bottom button 4 times in rapid succession and then hold down.  If minute3s start to advance, it is auto-set.  Other(inconclusive) clue is if the clasp has a continuous row of holes along the side for adjusting - a proper clasp intended for a magnet keeper would have a break int eh row of holes.  Good luck, check back in with your results.
							
							



