Fruit Machine Chat

How are these available initially? Are they manufacturing blips/faults? or features designed into them for what reason I cant think?.........

Will they now be chipped from new or do engineers chip them up?>

Hi guys, is it likely now that any deal or no deal powere of fives are still not chipped? I mean for the question mark cheat to get middle feature. Debating if its worth still driving to where there are some. Thanks a lot.