How do you guys get clearance using a big lipo packs. I got the original E4 and man you have to shim the upper deck at least 5mm or more to clear the batteries. I literally run it one time running mod I strip the front belt and off the shelf she goes it been like 1 1/2 year since last time I race it. I love the car probably the most stable car I have ever driven but with the big lipo pack we are using it just won't fit. Any advice or hop up I can get so I don't have shim the car like crazy just to fit a big lipo packs.