John your right I re-read my origanal post I did say new what I guess I meant to say was different than origanal although the reason I purchased them was they look immaculate I have seen many used gears that indeed look worn these were in the original box and look as new the po said very little hours as he simply changed to a different ratio I posted a close up pic of the cut anyway I appreciate what your telling me that maybe they just already have an established pattern in which case I may just have to run the best pattern I can and I get that but what I don't understand is why the pattern don't move up and down the tooth with each shim change I make?
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