How to clean up Jenkins job so build stability is not affected

How would someone clean up a Jenkins job such that the build stability rating is reset and not affected by previous builds? I created a build job and through trial and error, I finally got the job to compile/build correctly. However, I don’t want all the previous test builds to affect the build stability rating. I tried deleting all the builds and restarting Jenkins but it still says 20 of the last 25 builds failed. I looked in the $JENKINS_HOME directory (~/.jenkins) and couldn’t find anything regarding build stability. Thanks.

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