Completely disassemble the atomizer. Every single part. Don't just change the build, take it to bits. Clean and inspect it closely. What you find determines what you do next. Don't fuck with a short. Take it apart. All the way. Pins, posts, the works. Every rebuildable atomizer should be disassembled and cleaned before first use anyway and I bet you never did. People that do don't come on here asking why their shit is shorting. They're familiar with every part and when they have an issue, they take it apart and fix it. Once you've verified the atomizer is good, if the problem persists you know the problem is with the mod.