While you're playing the examples, finger the full chords and play around with the chord notes. Pick them in an interesting order that compliments the doubles that you're playing. A good fill would be a simple 1/2 step walk up from the 7th to the root of each chord.
Example: between measures of A7, walk up from G - G# - A on the 6th string or on the 3rd string. Transition to D7 with a walk up on the 5th string from C - C# - D or on the 1st string. Finger the full chord and play with the notes in it to get a sequence that you like. You can add tones that are not in the chord tones but they will need to "fit" or sound right. A fills picking exercise like this is what rhythm playing is all about.
Ex. 11-3 has chord tone based fills in every other measure. Ex. 11-5 has chord tone fills every other measure. These fills you're looking for are all created with chord tones.
In 52 Rhythm Fills & Variations, Ex 1.1 - Ex. 1.4 have exactly the fills your looking for. Ex. 1-7 - Ex. 1-20 have more of the exact fills your looking for. Any time you see the individual notes between the double stops, those are your fills.
If you have them, 20 Turn Around and Ending Licks are all chord tone fills.
Check it out. Listen to the examples, especially in the 52 Rhythm Fills & Variations. I think you overlooked them.
See you down the road! 
