All you need is a 13mm spanner mate.

Put the car in first gear.

Loosen the 13mm nut on the rod down by the steering rack.
Peel back the gearshift gaiter inside the car and move the stick would be in the optimum place for 1st gear. Get a helper to hold it steady and do up the 13mm nut tight.

All should now be well. If you cant get 5th, you need to move it over a bit more.