Were the parts in Polished material? That process tends to cause pegs to be smaller than normal. Black (and other Dyed) prints tend to fit more tightly in my experience as well. In the event that nothing else works, it is possible to thicken pegs by applying a layer of superglue over them and letting it dry before use, but I've not yet encountered any customer who's needed to use this method on the Null Rays. Thanks.