I’ve acquired a Lone Wolf Audio Plague Rat through a trade and I’m having an issue with feedback. I know rat’s typically cause a lot of feedback on single coil guitars, but this is completely unuseable. I’m not even sure if it’s feedback, it’s a high pitched uniform squeal that slightly changes pitch as I mess around with the knobs. It happens with gain even halfway up, sometimes more or less depending on eq and it happens across the original, germanium and silicone clipping options. Rats are gated, so maybe the gate is broken? If anyone has any suggestions or experience with this pedal, I’d greatly appreciate it. There is little to no information online elsewhere.