While I sympathise with your predicament I am going through the same pain. I had a perfect functioning Ender 3 and was talked into a BL Touch. It's been back to the store twice and they can't get it working unless it's a small test cube. I've messed with it to the point where I can get it to print as long as I use a raft.I'm so annoyed. It's ruined my experience with the printer.I still have to regularly manually level the bed so what's the point of the BL Touch at all????And even with that the edges of the raft curl up on the right had side of the print even using glue.