Your composition is very similar to mine.
I also used a surface task force with 2CVL, 1BB, 1BBV, 1CA and 1 CAV in the main fleet and 1CL, 1CLT, 4DD in the escort fleet. My fleet has gone A-B-E-G-Z 100% of the time.
The only main difference I can see is that you're using an SS in the escort fleet. Try swapping it out for a different ship and seeing how it goes.
It is either that, or the fact that you don't have a slow BB in your main fleet.