I recently purchased an Alesis Nitro Mesh set but I'm concerned I may have a hardware problem. Alesis Support is not getting back to me. I can get a rimshot on the snare and tom 2, but not toms 1, 3, and 4. If I swap cables around, I still can't get rimshots on those pads, even though I can trigger a rimshot by pressing the button on the module. That suggests to me it's a problem in the pads themselves, not the cables or the module. I'd be grateful if someone could point me in the right direction to fix this, or confirm for me it's a warranty issue I need to pursue.