i also havent read all the huge posts so forgive me if im repeatin
you say you tiled from the left side of the room to the right and this is why you have lost your level,,generally if im doing a door reveal especially bang in the middle of a large wall i would start of by tiling up either side of the doorand then meeting final tile in middle and adjust accordingly if needs be then i would tile either side to meet up with joining walls,i suspect your door reveal isnt plumb which has made you tile down wards slightly when going over it and tiles dont meet lines on end of the wall. i would remove all tiles from the top section of that wall and re do it using the method i suggest.good luck and hope this helps mate ..if it doesnt then slap me with a rubber fish:drool5:
you say you tiled from the left side of the room to the right and this is why you have lost your level,,generally if im doing a door reveal especially bang in the middle of a large wall i would start of by tiling up either side of the doorand then meeting final tile in middle and adjust accordingly if needs be then i would tile either side to meet up with joining walls,i suspect your door reveal isnt plumb which has made you tile down wards slightly when going over it and tiles dont meet lines on end of the wall. i would remove all tiles from the top section of that wall and re do it using the method i suggest.good luck and hope this helps mate ..if it doesnt then slap me with a rubber fish:drool5: