I have to disagree slightly with SFMM homie when I say that you should just ditch all of the crossbeams or maybe just keep the beams on the tallest supports. Even then I would just have one crossbeam. B&M supports are very minimalistic.
I'd go with just the horizontal crossbeams, they're still perfectly realistic, B&M used loads of them on Silver Star. http://www.rcdb.com/ig1414.htm?picture=41 The diagonal ones are a bit much for B&M, and don't take anything from the headchopper efects you wanted, so you might as well just get rid of them.