Nick - The Straps are designed to fit the stock chassis and the current G2 chassis - This is why the screws are not long enough for your application (because of the side rails). You definately need to use the bonded washers at the mounting locations. These will give you a much stronger hold point. Mike is correct, you should lace the straps through the slot on the lower chassis - this will keep the batteries from sliding foward. If your velcro is not sticking, then you might have a problem with the velcro material. Check that the hook side is not flat or damaged and then check the loop side is not worn. If you think the material is defective let me know (email me at
mail@gorillamaxx.com) and I'll get you replacements.