Do they have aluminum or iron stands? It's not unusual to have to tap the stands off with a hammer. If they're aluminum, I don't know that I'd want to use them. They don't clamp the shaft as well and in general just aren't that good except for very mild/stock type builds.
It's also not unusual for the rockers to be scored along the bottom. I've used lots of them that way, depending on how badly they're scored. Any way you can post a picture of them? They might still be fine to use, again depending on what your intentions are for the engine, like RPM use, spring pressures etc.
