Bed leveling issue, x axis not 90⁰

Hey folks, I just received my sv06 plus but I’m struggling with the first layer. A youtuber made me aware, that the x-axis might not be 90⁰ straight to the print bed and indeed mine aren’t 90⁰. Hence , the difference on the bed is too big for the auto leveling to balance out. According to the youtuber , you should just losen and rearrange the screws that hold the vertical frame but i couldnt manage to make it completely 90⁰ straight. Anyone of you having the same issue ? As a consequence, my first layers are quite different across the whole print bed which results in warping and bad first layer on some spots…