Find a new machine shop. Evidently they don't know how to calculate CR. Unless they specifically down fill the bore, YOU WILL HAVE NO IDEA HOW MUCH COMPRESSION YOU HAVE.
I have seen way too many engines come in that were 15:1 but when they were actually MEASURED, they would be lucky to be 13.5:1.
When you get the engine from the machine shop, all the math should be recorded on th build sheet, including downhill. If the math ain't there, you don't have a clue what your CR actually is...it will be and "ish" number.