Ratter - The outer upper hub carrier hole is pretty much always better on the Mission and previous cars. Everyone ran it there 100% of the time. Every time we tried the inner hole we went back to the outer hole.
Woozer - Any shop that has Schumacher parts can get the drive shafts in either material (U2151 Steel CVD, TR2564T Ti CVD).
stulec52 - Go step by step...
1. Verify you radio is at the stock settings or erase/reset that model in your radio's memory
100% Dual Rate L and R
100% Steering End Points L and R
0% Exponential L and R
2. Set your servo arm to be perfectly vertical
3. Connect the servo arm to the steering bell crank and adjust its link until that arm that the steering tie rod connects to is parallel to the center of the chassis.
4. Adjust the link going to the other bell crank until it is parallel to the chassis center line and the other bell crank (this is different than described in the instructions but its better).
5. Connect the tie rods from the steering bell cranks to the steering spindles and adjust them until the car has 0deg toe or .5deg toe out.
6. Turn the wheel on the radio and reduce you end points until the servo stops buzzing at full lock. The left and right should be within 5% of each other.
If you followed these instructions and you still have a problem it might be with your radio.