The arm supports on my revo 4000 are bruising the frame...why? I don't overtighten it. I was first turning the knobs so the supports just felt snug onto the frame and when I noticed the bruising I started turning just to the point that it touches the frame. But it still does it. What can I do? If the support happens to fall on the headguard then it just bends the headguard, but like just now I strung up my exo3 rebel 95 (the support lands past the headguard directly on the frame)... I looked closely and you can see where the paintjob was slightly bruised. Not enough the chip the paint but I can see it. I considered loosening up the support even more but I don't feel comfortable because the frame would be mounted quite loose. Any advice would be greatly appreciated.