VVT-i Oil Control Valve

[06YarisRS]

My exhaust manifold heat shield had rusted off where it attaches to the lower part of the manifold. I removed it tonight. Glad I did as as soon as I removed it, I noticed that I am missing one flange spring bolt. I think I'm going to need a manifold in the not too distant future as the flange itself looks quite corroded. I'm now wondering if my ticking is actually an exhaust leak, though from what I've read that kind of ticking sounds can come from a bad manifold to head gasket. I'll grab a spring bolt and put it on tomorrow. I'll also try snugging up the manifold bolts. I'm not optimistic that it's the cause of my ticking, but it needs fixing anyway. Maybe I'll get lucky!