well, i pulled out the front driveshaft and the front dogbones today. I also pulled the front diff out to look at it, and as i suspected, there are several teeth missing on the ring gear. lock the diff. with superglue, how would that make it 2 wheel drive? just by pulling the driveshaft and dog bones, the front wheels just freewheel, and the diff does absolutly nothing now.
you're also right about the steering being a little better when the truck is rolling. but, at full steering lock, i can't even make a complete circle in our street (it's a normal width neighborhood street).
i have the futaba 3003 steering servo, but i can't afford to upgrade to a better one right now. i'm just trying to make do with what i have.
i think i may have discovered part of the steering trouble tho. my servo saver seems very loose. it isn't broken, but with the slightest amount of pressure from the servo, it comes apart at where the 2 peices meet in the middle (the V shaped parts on the shaft of the servo saver.) i tried to tighten and/or adjust it to give it more tension, but i couldn't get it to do anything. I put a couple of shims under the bottom shaft of the servo saver, between it and the chassis, and it solved most of the problem. the shims put more tension on the spring inside the saver, and now the 2 peices don't separate as much....and my steering is a bit better. it's still no where near the way i would like it to be. My duratraxx evader has been modified into a monster truck, with 4" tall, 3" wide masher tires, stock steering linkage and a futaba 3003 servo...and it will literally do circles in about a 2-3 foot radius. i need the entire street to make a turn with my volcano.