I'm still pretty new to Solidworks, but I'm having trouble with something that should be pretty simple and I'm obviously going about it the wrong way.
I have a series of framed floor panels arranged in a circle (the top of a 37' turntable). The framed panels sit on top of a length of angle steel that is rolled to a 35' diameter. To fasten between the panel and the angle steel, we weld a unistrut 90 degree bracket to the deck panel frame and a mating bracket to the angle steel (the unistrut brackets are handy because they're pre-punched for 1/2" bolts). After brackets are welded to the panel & angle steel, a 1/2" bolt fastens the to parts together.
My problem is locating the brackets correctly on the frames of the deck panels. The center of the holes in the bracket needs to land on a circle that is offset (1.0625") from the exterior edge of the bent angle steel. I've offset the edge of the angle steel and have it referenced in the 'deck panel assembly'. However, I can't seem to create a mate between the sketched circle and the hole of the bracket. I've placed reference points in the bracket part, but when I select the point & the sketched circle, no mating options are available.
A picture of the deck panel assembly and circular sketch can be found at: