worried....... a little

I've seen that a time or two, and as stated the used bearing surfaces may not align with the new-cam journals, at every point of revolution.They make a tool for dressing the bearings. I forget what it is called, cuz I haven't seen one in many years.
I kindof agree with Rusty.
The valve springs are gonna drive the cam down, and in no time it will be loosey-goosey.But what if not!?