Charge measurements was done on both ETMs.
It is early enough to discuss the new tendencies, but probably ETMY change the sign of charging after changing the bias sign on ETMY (see 20387).
Now (since Aug,10) both ETMX and ETMY Biases are -9.5V, 
Current results are in attachment.
Upd: Additional set of measurements was done at 12pm - 2pm (local). Windy, so the errors are large. New plots added. Script for gamma measurements debugged and tried on some of these measurements, results are not ready yet.