Hello. I'd like to know as much as you guys can offer concerning ABM single string bridges. Are they made of brass? Are they hard to work with? Overrated,or a flawless solution to string alignment? I did a search here,and all the links I explored wouldn't get me past a reference page:"Click here for hompage".I'd phone,but I can't speak German.The Germans I know don't understand bass. Thank you for your help.