Crankshaft Counterwieght Hitting Thrust Bearing

[Rich1972C20]

I'm rebuilding a 350 chevy and I put in new crankshaft bearings. When I put in the crankshaft the counter-wieght hits the thrust bearing t the point I would have to really force it to go in.

I bought another set of bearing just to see if they shipped the wrong ones and the same thing happened. I know you can sand down the bearing to get the proper clearance but this being basically the first rebuild I'm doing I'm concerned I'm overlooking something. It a stock crank and the bock has not been aligned honed.

Is this common that cranks may not go in without some sanding of the thrust bearing?

THanks guys