My 2022 Coleman/Hisun UTV 400 steering shaft has a couple of U-joints and angles to help get it down from the steering column to the rack. Today, my son who drives it most came in and said that it wouldn't steer and that he could turn the steering wheel but it doesn't turn the wheels I investigated and noticed that the bolt that clamps down the upper part of the steering shaft onto the lower one before the first u-joint in the steering shaft had fallen out. We haven't been able to find it, so I wanted to see what size and thread, bolt I should get to fix it?