Okay. I need some expert advice here.

I have a Volt X2 battery, about 3 weeks old, that's suddenly very difficult to draw, and I can't figure out why.
It's not the carto; I've tried that on other batteries, and it's fine. I also tried a CE3; same deal.
My first thought was that the battery needed cleaning, so I did that - even cleaning out those weensy little holes with a toothpick. That didn't make any difference either.
Brilliant ideas? I'm stumped.

I have a Volt X2 battery, about 3 weeks old, that's suddenly very difficult to draw, and I can't figure out why.
It's not the carto; I've tried that on other batteries, and it's fine. I also tried a CE3; same deal.
My first thought was that the battery needed cleaning, so I did that - even cleaning out those weensy little holes with a toothpick. That didn't make any difference either.
Brilliant ideas? I'm stumped.