Installing Pushrods on 318 with 302's

So this is just when the lifters are on the base circle? That is when the pushrod should be easiest to spin. If you did not put any oil i the lifters, then they should spin, but if they have residual oil in them, or if you filled the lifters with oil, then it may be hard to spin the pushrods with the lifter even on the base circle.

So is the interference the answer? That amount of milling seems way too trivial to cause this. Is this the roller lifters?