Hi, I’ve got a strange one on my hands... my 360 is climbing and dropping by as much as 400 RPM at idle. I’m curious if anyone has ever seen anything like this before. 360, 30 over. Street/mild purple cam. 16 degrees initial timing (approximate, it jumps around with the unstable idle). Edelbrock 600cfm (cleaned, floats adjusted, mixture screws defaulted to a turn and a half out). Vacuum advance disconnected. I have hosed down the intake gaskets with starting fluid and do not detect vacuum leaks. I removed my spacer setup and put a fresh carb base gasket on there too. Here’s a link to about 30 seconds of it running. Any insight would be appreciated!