What do you guys think is the best gearing?

15/49
15/52
14/49
14/52?

Which will left the front wheels off the ground with the .18TZ? Also, what grease do you guys use in your diffs?

Mambas suck! So much weight in one wheel, Im going back to the Dirt hawgs. Waiting on some parts for mine, 18tz really puts some strain on the drive train, also picked up a Savage X on the weekend so I have been running it in while the MT2 is out of service.