you don't want a front raked car - that is more for Straight line speed
you want your rear squatting and your front a bit higher. thats just how it goes. your mechanic did the right thing.
the proper ride settings on my e46 m3 are 13 inches center of wheel to fender in the rear, and 13.5 inches center of wheel to fender in the front.
2014 Porsche 911
2012 BMW 128i