It is a a new engine. The machine shop installed the cam bearings. I have it on the stand nom. The cam slid into the first 3 bearings without a problem. the fourth just before the back bearing is where it got tight. I did go ahead and install the timing chain and the motor spends without in binding. It is tight but with all the pistons installed I would think it would be tight. I have installed a cam before but it has been many years so I don't remember the characteristics. Should I be worried? What would you suggest?