CD3 Batter pack question
 

Does any one have a clue how to fit a 5 cell hump pack into the space shown on a CD3 Pro kit. I did some research before buying one but even the ofna pack measures 57mm x 26mm x 29 and the space even without the small box is roughly 56mm x 40mm x 20mm. Can someone please help me I'm tired of zip-tyeing the normal battery holder to my rear diff case between the body posts. I love my CD3 to death but I have had much modding to get this to work just right for instance the front cup joint on the drive shaft rubs on the servo saver and I had to grind it down and looking at someone elses own on the forums they had to too.