WHEN FITTING NEW CONTACTS ENSURE THAT THE CONTACTS ARE PROPERLY SEATED ON THE
SURFACE UNDERNEATH THEM
AND THAT THEY DO NOT TILT WHEN TIGHTENING THE BOLTS THAT HOLD THEM IN
PLACE
THIS IS TO ENSURE THAT THEY HAVE A GOOD MATING SURFACE WITH THE PLUNGER
WHICH WILL
REDUCE ARCING AND ENSURE A GOOD LIFESPAN OF THE CONTACTS AND
PLUNGER
EDIT