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Rhonda – Please do not tell people to go to the Yellow Pages or Google Search. We want them to come to YA for answers. If you do not know the answer, simply let someone who does answer and do not rebuke people for asking. Thanks.

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The pins are numbered for specific heights and a random number generator is used to select pin heights. In automotive and certified licking systems the numbers are recorded.

I used to have a Curtis key book and could look up the number for any GM car and use the numbers to punch a new key. When I repossessed cars for Bank of America I used the numeric system whenever the bank could not provide a key.

Best wishes.