Patrick,
Welcome to the forum. Have you thought about creating/modeling the rivet. Making an ipart out of it with all of the sizes you need then publishing it to the content center? Seems to me this would be easier in the long run then what you are currently doing.
If this solved your issue please mark this posting "Accept as Solution".
Or if you like something that was said and it was helpful, Kudos are appreciated. Thanks!!!!
Best Regards,
Scott McFadden
(Colossians 3:23-25)