Here's a video of my DL44. But keep in mind my FH is steel and I used a blowtorch. But I did strip the finish off the Denix completely and used AB to refinish it. I also used Super Blue on the steel parts.
https://youtu.be/3vuxl7y8QAQ
Here's a crystal chamber I built for my Vader MPP. This might be a bit more applicable since I used AB on the aluminum pieces. I also used brass black on the brass and copper bits.
https://youtu.be/IiNmcZcO7oM
All in all I used the same process and in each case (AB, BB, SB) I was able to knockdown and control the intensity of the weathering effects afterwards.