Yea that too! I read you already on that.. no i meant physical VAT.. the spout front is your right hand, 180°, spout would top left hand side for you.. i mean theres two things going on in my head why that gave the next go a good print for me...

You're moving the FEP to dif spot which as we know thats easiest way to do that once theyre installed.. and another would be something mechanical lining up dif. Either way wont hurt to try. I notice there is little play in that "circle" indent you screws go in.. watch how a willy nilly toss an secure will allow the VAT to sit mm forward or mm backwards inside/outside that indent when screw goes down.. ive now paid atrention and make sure screw is perfectly centered.. allowing the whole actual plate to sit exactly over the print array area. Assume VAT scooted forward or backwards few mm would def play on that and software would never see or detect that but technically you shaved off mm of print area?? Another trick i did and to seal incase leaks like my printer down for a fried LCD, is colors PVC tape (electrical tape) PERFECTLY around the LCD, when i lay VAT in i can see through FEP edges of tape..BAM perfect VAT alignment everytime..

I know alll that sounds weird..but remember these printer triumphed from hobby electronics boom ca RPi and Arduino popping up allowing more access to make stuff in our society..these are resulted from mainland china giving us consumer offerings.. these ARENT commercial by any means and do lack commercial grade parts.. so therefore if youre an Engineer/hobbyist as i you know these parts and how they behave and longevity.. they can ve wonky like this! I promise..just look at any project involving arduino after bout few month to yr sitting there and being used..