Send your cylinder head to RDI and our team will perform a full rebuild of your cylinder head and set your lash to factory specifications, (for street cars) or we can tighten up your lash a bit as we do in our race car.  Email us for pricing.  Price depends on exactly what you want us to do to your head and the current condition of your head.  We also carry new valves, guides, seals, etc. for this awesome cylinder head.