Question: How do I figure shrinkage?
Answer: (Green size - Fired size / Green size) This will give you your percentage of shrink.
Question: Quick simple way to check if your lube ports are clogged
Answer: Close all needle valves on the manifold. Once you have done so, turn your lube pump on manual and build pressure. Once the pressure reaches above normal operation levels, open one valve. Your pressure guage should drop immediately, if it does not, the port is clogged. Repeat this process until all valves have been opened and closed. Note the ports that are clogged and apply grease using the grease fittings on the manifold to open the port.