You should be able to get them through a local parts store, the mom & pop operation. If not, try one of the on-line vendors, I think Patricks has them. When you clean your rocker assembly, mark everything so you can put it back the way it came apart. I made some thin aluminum tags, I saw the other day one marked with a paint marker, which held up under a solvent bath. Check all of your pushrods for straightness, you might find more that are bent.
