I think you have it. In the second group of pictures the one sticking out is the stock 153/230. The dished one is a 250. All my pistons are .040 over. What messed with me is that none of the ones I bought had the compression height advertised. I think now it is what CNC was saying about lowering the top .010" to allow for truing up the deck or head. I haven't been able to try the Ross flat top 250 because the pins have to be fitted. They are a little taller and I have high hopes for them. This project has been sitting too long. My goal is to have this engine running on a stand by the end of May. (20140)
Headed home tomorrow.
