If you are studying Level 2 and no longer have daily control issues, you are ready to go to the Cradle, so you can begin working on more precision. For best results, you should complete a Horsenality Profile to know which Cradle to choose.
If you have a Left Brain horse, you will need the maximum tongue release of the C3.
The Left Brain Introvert is not a very forward-going horse and tends to feel trapped when the bit applies pressure to their tongue. As soon as you give them tongue release, they feel more free to go forward, they are less inclined to overflex, and their mouths are much more comfortable and quiet.
When the Left Brain Extrovert feels tongue pressure they will tend to pull it back or hold their mouth open to avoid it.