I think it's normal, or at least hope so. And consider, I use a HV pump, I use solid lifters, so I blocked those galleries off, I've enlarged and flared the holes to the
oil filter mount, I've restricted the
oil to the heads, and I've flared the in the block that feed the crank main journals to match the bearings. And I've put screw-in plugs everywhere there used to be press-in ones. Keep in mind, that once off idle, the pressure rises quickly. I suspect it is just normal for my bearing clearances.