oil pump driveshaft

i was doing a few things in the garage tonight, and i tried to test fit my oil pump drive shaft. It did not fit correctly. Where the shaft fits into the bushing, it was very tight where it started, i pushed down on it a bit, but it didn't go very far. It also took some force to get it back out. Read in my engine rebuild book about replacing the bushing and how it should be stretched out the the correct size after the installation.

Does anyone have any ideas? should i get a new bushing, or try to get a tool to make it the right size?

Thanks