rear cam plug

ok, thanks alot. I am assuming now that the machine shop that did the block work was not sure of what plug to use. They gave me one like you described, and one that is more similar to a soft plug. I will put the concave one in then. Hopefully i can manage to get it in correctly while the engine is on the stand. If not then maybe once i get it on a hoist and off the stand will work?

I checked the bolts and not one of them has a hole in it. also refrenced a picture from taking it apart and it did not have the oil tab. Must be the last guy that built it must have lost/not realized it.

Thanks alot!!