Just got myself a blue E10. So here is where I sit two days into ownership as a 30 year old mechanic. FASTER, I WANT SPEED! lol. While ordering the truck I ordered a 17t-21t pinion set, 996r servo for 4ws upgrade eventually, 540 35T motor, two more 2800mah nimh batteries and a pair of diff gears. Pinions and motor are due today and tomorrow. FIRST off, will the stock esc be ok with the pinions and 35t motor along with stock? Plan to fiddle and adjust for what I plan to do that day. If it WILL take those fine, can I go lower on the turns for the motor? What about 2s lipo on stock esc? Worth it? Goal with it is to lower it just a little and make it a BEAST 4wd 4ws ATV thats faster than a walking pace, lol. Soo far I cut the stock tires, pulled the foam and weighted down the front ALONG with general tightening of screws. Anyone know if most standard 48p spur gears will work too? Like to gain a little speed there if I can as well. Finally, the biggie, 2 speed tranny. This is my first hobby grade RC and gotta say, its awesome to have this much in options. But yes, i'd like to add a 2 speed tranny and 4ch radio/reciever down the line. With the 4ws, can I just add the rear servo to the same channel as the front so they turn in unison on a 2ch? I only ask because the esc has two open slots, one says 3ch/bind and the other is VCC... Not sure what they are and do yet ALONG with the DSC on the back of the remote. I have gone through the forums and gotten a ton of info, but my questions are pretty specific and have the money to buy all but the 3/4ch mod.