[crazyjr]

There are not three one-ways in a revo tranny. the two needle bearings on the output gears are standard needle bearings

You can either have first or second if you want reverse and no servo's. Anthing else and it will be a grind, literaly

you may be better off using the two speed because first may be too slow and second may not be able to pull the truck

These are my opinions based on what i know from working on my Revo tranny. Starscream has the experience from doing it and i would wait and see what he says, because he might know something I don't