While you are not able to check if Stake's in-house Black Jack system is fair, because you are neither a statistician nor a mathematician, I myself are very well able to check if Stake's in-house Black Jack system is fair without me being a statistician nor a mathematician.

How is this possible?

I simply use the globally recognized information published by statisticians and mathematicians. 

For example, they published the law of great numbers which determines the technically maximal possible deviation from the expected outcome.

Now it comes, when my experienced deviation at Stake's in-house Black Jack system is 9 times higher than technically possible based on the law of great numbers, then ths is 100% proof that Stake's in-house Black Jack system is rigged!