Don't worry about it. If there's a slight burr on the bearing it will polish itself into a good running fit in the first few minutes of operation. Remember the crankshaft has a 2:1 torque ratio through the timing gears, and it can produce a LOT more force than your bare hands. If you really want to find the tight spot and deal with it, coat the suspect bearing with Prussian Blue, slide the cam in, and give it a couple of turns. The tight spot will show up as a shiny area which can be scraped carefully to relieve the bind. It's basically the same procedure that's used when fitting Babbit rods.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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