I love responding to these types of comments. And Jim, please don't take this as condescending in any way. Conversely, give yourself a pat on the back.
Short answer. If it seemed a bit runny, then it was, and yes...reduce it a bit more. For more information, watch the Cooking School Lesson on
How to Make Pan Sauces.
Why I like responding to these types of comments is that I can see a potential student (Jim, you need to join the school) sitting on the edge of the culinary fence - the great divide between home cooks that follow like drones and those that lead with confidence in the kitchen. Jim, you are so close to falling over to the right side and I can see this because you are making observations and almost answering your own question based on your intuition. You just need to start trusting this intuition and taking action. Trust comes from knowledge and lots of practice. Most people when cooking recipes simply follow. They don't always think. They don't take auditory and visual cues and ask the right questions. Cooking even the simplest dishes WILL involve making many continual small cooking adjustments along the way.
Reducing a pan sauce, if you have built the sauce correctly and used a good stock, is as simple as waiting for the right cues. Keep reducing and you will get there. That's it.
Jim, you're asking the right questions. Now trust your own instincts and take corrective action until you reach the desired end result. I bet if you did this dish tomorrow it would be perfect - especially if you watched the lesson on pan sauces and armed yourself with some professional chef knowledge.
See you on the other side :-). You're almost there.