Thank you for your previous replies - I did finally get the slab to sit flush with top of block.
When working with plan view - room specifications the references to stem wall tops (SWT) to ceiling, floor to SWT, Stem Wall do not designate whether it is including the sill plate. I am assuming it does not include the treated sill plate that is bolted into the foundation. I am sure that this is confusing to many of us that are trying to work with typical foundation construction in the South.