I shoot the OL-5000. It's very similar to the 5500. The package should have come with two longer screws and two pieces of "pipe" about 3/4" long to offset the quiver. If ya didn't get them you could get a couple at the local hardware store; 1/8" inside diameter. The screws are 10X24 and the appropriate length (about 1 1/4").

I'm trying to think of what they are called and nothing is tweaking my brain. They are really a split pin made from steel.