its called setting the clock in beat do a serch online and you should get good advise with pics.
sit the clock on a level surface and move the pendelum to one side (left or right) from its resting point and lisen for the tick. lets say the pendulam moved 30mm to the right and then ticked, then move it to the other side and lisen, lets say it moved 20mm from the pendulams resting point. we now have to make this spaceing the same on both sides.
ok now the tricky bit we have to gentlyyy push the pendulam rod to the left as far as it will go as we are trying to move the pallets on top of it slightly. now do the first test again and see if the spaceing has changed, if you move it the wrong way the spaceing will change from 30mm to say 40mm on the right. hope this helps.
Paul R
December 2008