This is what I mean, look at the picture.
2 holes so to use an sds (broken lines) from inside the corner cabinet (note what it is), straight into the wall to fix a 2x2 levelled with the rest of the cabinets.
Alternative is to mark the level, remove the cabinet, fix the 2x2 and then refit the cabinet.
2 holes so to use an sds (broken lines) from inside the corner cabinet (note what it is), straight into the wall to fix a 2x2 levelled with the rest of the cabinets.
Alternative is to mark the level, remove the cabinet, fix the 2x2 and then refit the cabinet.