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3. I think we all know the value of a liberal coating of assembly lube when installing a cam. One thing most builders overlook after they have installed the cam is to make sure it spins nice and smooth with no hard spots. If there is a hard spot in the rotation, then there is an issue with either the cam being bent, the cam journals not in line, or the cam bearings in crooked. No matter what the issue, if it doesn’t spin smoothly pull it out and investigate.