I am not a retailer but I fixed issues with the last two pins I sold. I feel it is the right thing to do even though the machine may be abused in the new atmosphere. ( Not saying they were) One was a minor switch issue(Destroy the ring) but the other was a blown transistor that I replaced for the buyer(VUK on BF). I only did this within the first 30 days of the machine sale. I want folks to enjoy the machines they bought and hope that they will spread the word that pinball is fun...