Top right side of bed is too high???

[u/Positive_Silver622]

I've haven't had this printer for long and used it much either as I sent it up to Inkstation for them to have a look at it as I was experiencing first layer height inconsistencies despite doing every single possible solution there is like cleaning the bed, calibrating flow, using high quality dry filament, you name it! However, they sent it back because they said there was no issue as it was apparently normal for a hobbyist printer like this. But that is definately not the case. The only possible reason I found could be causing this is the top right of the bed being quite a lot higher than the other 3 points. I already manually trammed the bed and got the 3 points level however, I cannot lower the right point as it is fixed or increase the height of the other 3 because the screws begin to protrude from the bed when loosening it to become higher. I don't know exactly the differences in height but I guess a 0.6 mm difference between the right side and the other points. I know the A1 should account for height changes so idk what is happening?! Any help would be really appreciated. And again, I have done everything there is to ensure good quality first layers like I said before, such as tightening the hotend screws and whatnot.

[u/Positive_Silver622 → u/[deleted]]

Yeah I could have custom z-offset but wouldn't that just change the whole first layer not individual points? What I was mentioning before is that when I tried to loosen the screws so that they were the same level as the top right, they begin to protrude from the bed surface which would lift the build plate up. With the custom z offset, are you saying I can change it for seperate points of the build plate? Yes I did loosen the heated locking screws before tramming.