What camshaft should I use?

Pushrods are good. I took them out and cleaned them, they were all straight. I also cleaned the rocker assembly. A soaking in kerosene and scrubbing got a lot of grime off of them.

Everything was reassembled and torqued to 30 ft.lbs. evenly.

I assume you mean the rocker hold down bolts and NOT the rocker adjusters. I am assuming since it is running, you adjusted the valves correctly?