Just as an aside, the Malaga ILS is not particularly steep at 3.2 and the problem comes because it apppears to be bent by the ridges on the approach. The best way around this is, in my experience, to fly V/S until 7 DME when you are clear of the ridges, follow the altitude minina on the plate and ignore the GP until then.
Coupling to the GP can produce descent rates of up to 1800fpm inside 10 miles.