Telescopic mod have always little issues in conductivy, by it's structure. Voltage drop depends also the size of the battery you are using. Bigger the area between the tubes, which is not connected each other by threads - leads movement between the tubes when using the device. You get the feeling, that sometimes device is firing better and sometimes not as good. People have been using noalox on those threads, and had much better results when testing the voltage drops on EA. Noalox itself is not very well conductive, but it decreases the movement between tubes and makes the structure more solid and that way conductive -> more steady firing. I don't have EA, but I noticed this also in my SturmMod which have very fine threads. With 14500 battery it was unstable, but with 14650 it was much better. Noalox, and of course keeping contacts always clean helped significantly.