Flutter Tongue Tips
Try your flutter tongue (this is taught in Tongue Block Study 3)... does it have a nice roll to it, or does it sound choppy?
When performing the flutter tongue your lips are in the normal position of being over four holes and your tongue is in the normal position of blocking the three holes to the left.
When lifting your tongue on and off the face of the harmonica for the flutter keep your air stream consistent (unlike the slap where each time you place your tongue on the harmonica you give it a little diaphragm push), make sure to turn your tremolo off, and keep your tongue to the left... sounding choppy means your tongue is drifting to the right and is closing the right-most hole... keep that right hole open.