As with clean singing I am quite satisfied with my voice. (Hitting notes right, getting everywhere relaxed, etc...)
But sometimes I want it to sound a bit more "with balls". - No screams, just with a litte rasp on top of it.
(I guess its the wrong approach wanting to sound like somebody else, but....

some Hetfieldish edge would be nice. Or like Janne Christofferson of Spiritual Beggars and Grand Magus. That guy rocks!)
I tried out Merkabas hint with singing Louis Armstrong in the car. That was great fun

But, when get this gargling Armstrong sound, my adams apple moves up about 4 cm (two inches). I guess thats bad technique, right?
When i try to move it down I return to clean voice.
Am I doing something wrong?
And one more question: Some say pushing is bad. Others say hesitating is bad (because muscles will work against each other).
Which of both is right?