Ok all I have a 2006 LT-Z400. 1 of the 4 bolts you loosen to adjust the change for lost and I replaced it. But the actual bolt you tighten or loosen to adjust the chain just spins. If I turn it to the left eventually it tightens. All 4 bolts are loose. I can't tighten my chain up. And the plate is loose enough to slide left and right. How do I open that area up to check out the bolt, or what should I do.