You still have to put in your Z offset I’m thinking, which the BTT firmware seems to not want you to be able to do in the correct manner. Not being able to use the stepper motors to go into negative Z is a real problem. I’m currently just sitting here dialing a little in at a time looking for good adhesion on a test print.
I’ll wager you’re still set at the BL Touch firmware’s default -1.85, which is waaaay off for where my nozzle is. It’s strange because at this point in my trial and error I’m finding the Z offset is different than it was when I had the OEM Creality 1.1.4 board installed. Not sure how that’s possible.