Basic Strat ending up with player Edge

I've tried to recreate a basic strategy chart / EVs for my local set of rules. I'm starting with the simplifying assumption of infinite decks (In reality, my local casino has 8 decks in a CSM.

I'm starting with Michael Shackleford's video here

He links to a spreadsheet which I used as my starting off point. However, I did have to make modifications given that this is ENHC, so the dealer could in fact have blackjack as opposed to the American peeks for blackjack. So I added a row of potential dealer ending values for a given starter that includes a BJ.

Additionally, I need to figure out how to model OBBO, I've simply added back a unit of EV when doubling facing a dealer 10 or A x the probability of a blackjack, so either 1/13 or 4/13 as you essentially get a rebate if you double and the dealer has a blackjack. Same thing for splits. This is probably the weakest adaption I did. I think I need to subtract that rebate by the chance that the player busts after splitting.

I tried to do things right but I end up with a player edge of 0.2325% instead of a house edge and I can't quite figure out where I'm going wrong.

Here is my modified sheet:

Google Sheet

Any one out there able to point out what I'm doing wrong?

Edit: Hmm. I'm having difficulty posting links.

Here is the youtube video: youtube.com/watch?v=jCF-Btu5ZCk
Here is the spreadsheet: docs.google.com/spreadsheets/d/1RfzlPrOHxiMvlbS1Y0zXXgRfajnhUpD1/edit?usp=sharing&ouid=113666895806815773578&rtpof=true&sd=true

The most likely problem is on the surrendering rules of ENHC. In a hole game, players are allowed to surrender to any dealer upcard after dealer peek, but in an ENHC, players are not allowed to surrender to a dealer upcard of Ace.

Quote: monodactyl

Here is my modified sheet:

/spreadsheets/d/1RfzlPrOHxiMvlbS1Y0zXXgRfajnhUpD1/edit?usp=sharing&ouid=113666895806815773578&rtpof=true&sd=true

Any one out there able to point out what I'm doing wrong?
link to original post

Was not able to connect with your spreadsheet. Can you post it as a link? check the formatting codes below this screen on the bottom right.

Try
https://docs.google.com/spreadsheets/d/1RfzlPrOHxiMvlbS1Y0zXXgRfajnhUpD1/htmlview

You're right about not surrendering against an Ace. I initially made that mistake. However, I removed surrender as an option against Ace upcard for where surrender was the best option (player 12 - 17). Right now there are no surrenders against a dealer Ace.

I’m interested. How about you restate the rules you use for the EV calculation? Also, there are usually 6 decks in an automatic shuffler, but you say 8.