I would like to know what you all think i should use for gearing. I have a merv with the m-vxl3 esc with a hobby star 2600kv 550 size brushless, steel cvds, rolling on 1/16 summit tires, on 2 - 7.2v nimh in series. This thing screams! I'm currently running 31 pinion and a 45 spur, and it still will not stay on all 4 wheels. Plus the the diffs are stripping out since i added the steel axles. Was thinking of using 55 spur with 31 pinion. Any thoughts would be greatly appreciated!