Don't use anything fully threaded like concrete screws because the thread will also grip the batten and will not allow you to adjust. You can do it this way but you will have to faff about packing prior to fitting the screw.
I ended up putting spacers behind the wood and i bought the concrete screws you hammer in (120mm long). They worked a treat, its solid now as i done this 4 times on each stud!
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