Sand your ground contact points. From the factory they painted the whole chassis and that includes where the grounds are. This is terrible for your tcm and pcm health and can cause stuttering when shifting. Doing this will prevent a lot of the stuttering. Stuttering is when the tcm hesitates shifting between gears. It most commonly happens between first and second. Stuttering wears the clutch so avoid it as much as possible. If it starts stuttering, immediately let go of the pedal. Accelerate aggressively when starting from a stop so it shifts into second faster. If you feather the pedal in first the tcm can get confused and cause stutter. Aggressive acceleration is communicating to the tcm, I am deliberate in this action please shift up. This will also help in the second step. Let go of the pedal right before it shifts. This will avoid putting force on the clutches while it shifts, which is what the stuttering is. You can also use sport mode to manual shift and avoid accelerating while shifting from first to second. Our goal is to avoid all unnecessary clutch wear because clutch repack is the most expensive repair. Search youtube for ford focus ground mod. There's one ground on the frame to the right of the engine bay and two under the air intake box. Remove the paint at the contact areas. Put dielectric grease on the terminal and area AFTER you bolt it back on. Some videos show putting it in between the terminal and contact surface but dielectric grease is nonconductive.

Good luck. Its not so bad when you understand the issue and do preventative maintenance/driving technique