Smoking fireplace

[welch100]

Last fall we had the chimney cleaned and a cap installed at our island cottage. Ever since, the fireplace has been smoking like crazy. We called the chimney guy who said neither the cap nor cleaning should make a big difference in how the fireplace draws. It always smoked a little, but now it's terrible.

Looking on the internet, I see something called a baffled chimney cap. Does anybody have any experience with that? Any other suggestions?

Thanks!