Dual Extruder First Layer Issue

No - the TO (OP) has a warped bed. Otherwise, why would one side (bottom left of left-had item) be nice, but the top-right of the same be unadhered? It’s not flat. The second print, yes, is just too high (though one of the corners looks to possibly be OK). But… the left hand one is definitely a warped/not flat bed.

<sarcasm> No, I never thought to do a calibration or change the line height </sarcasm>. I get this sort of response to posts all the time - YES I have tried it, NO, it is not the issue. You can clearly see that there’s a warped issue. To be fair, though, I can only see a 6x6 calibration - where is the 11x11? I don’t think it will solve the issue, as I have at least a .5mm warp in places. It may fix adhesion, but it would lead to wobbly parts in return. The print is barely adhering - the brim of the tower is printing at the bottom, but actually engraving the bed at the top. If you can explain/justify how this can just be a line height or Z offset, and it fixes the issue, I’ll send you $100. It’s not - its a warped bed, and if you read a heap of forum entries, it’s quite common, to more or less degree, and pretty much unacknowledged, except by 4 or 5 pretty cluey experts.