Hi all ,an old watchmaker friend of mine he is 76 and still goes to work as a watchmaker everyday . Imagine his knowledge .Anyway on with the topic . As you all know sometimes when you service a watch it doesn't matter what you do the amplitude would be nice another 5 or 10 degrees higher .Peter (that's his name ) told me to get an old piece of ladies watch mainspring and cut it about 2 inches long and wire it to a piece of pegwood leaving an inch hanging past the end .Get a hold of the pallet fork with a holder of some sort ,tweezers will do if your steady enough and burnish inside of the folk where the impulse jewel makes contact . This works amazingly as it polishes the inside and gives an uninterrupted smooth passing of the impulse jewel .Takes a bit of time but it works . I wanted to make videos of him doing some great stuff and upload but he won't let me Anyway give it a shot .