Kitchen corner wall unit problem

[bb700]

I`m fitting a heavy corner wall unit onto a wall which lies at 100 degrees (i.e when one face is flat to one wall there is a 20mm gap at the other at the extreme) .
There are no service gaps at the back ( 18mm butted carcass all around ).
I`m attaching using #12 screws with large flat washers to avoid `pull-through`.
Would you use vertical battons of the right thickness against the bad wall ( one batton would be about 10mm thick the other about 20mm thick ).
Or would you use another method.
Thanks.

[welsh brickie]

cut out the plaster back to the brickwork to accomadate the battons,level them and screw them to the brickwork, you can adjust the batton and pack it where nessasary off the wall, and screw the units to the battons.

[mraich]

[quote="welsh brickie"]cut out the plaster back to the brickwork to accomadate the battons,level them and screw them to the brickwork, you can adjust the batton and pack it where nessasary off the wall, and screw the units to the battons.[/quote]
[b][quote]I just moved into a new home. Small kitchen which has one tall unit attached to a base unit/counter top and a wall unit above that. I would like to remove the tall unit to make room for a refrigerator. However, I can't see how the tall unit is attached to the other units. There are no bolts visible anywhere. Any suggestios?
Thanks
MH