Bought a new to me boat and was checking the trailer out the other day. The rear part of the leaf spring doesn't look right to me. It is sitting in the trailer frame rubbing over every bump. There is a bolt and bushing about 2 inches lower and an empty slot for another bolt about an inch higher. My guess is the upper bolt broke off and the leaf spring should be sandwiched between them? I'm a mechanic working on medium duty trucks and bigger trailers for construction companies but never seen a setup like this. Don't like the rubbing on the frame.