I'm betting that you're the gentleman that I spent some time talking to at Charlie's shop while they were tracing the hard-start gremlins in your 124. My fingers are crossed for you that it is something less expensive than a catalytic converter. If it was on my 202, I'd be certain that it was the converter because that sounds like the most expensive thing it could possibly be. I just don't have the best luck that way.

It was good to meet you. I hope this gets figured out quickly.

Jonathan