Zeus bipolar prostate stimulator

I love this device, I just wish it was more durable. After a few weeks it's as if the strength has been cut in half which is wholly inadequate. I've gone through 5 so far and I'm certain I'll buy another until I get a chance to experiment with making my own. Until I read the posts on this site I was somewhat afraid that I night hurt myself by making my own. I have also noticed that my Zeus tens machine is stronger than my others but has a smaller jack. Can't find a place to buy replacement cables for Zeus so I'm looking for an adapter.