Thanks guys for saving me a lot of work. I had been thinking about sealing my SnP and doing the whole angle iron, fire rope, seal 'er up real good routine. On my last smoke, I took a closer look at the smoke escaping under the gaps and found that it was pretty even around the sides and front. Not rolling heavy, but just wisping out and definitely less than the stack. It wasn't coming out all the time either. Most of the time it was just coming out of the stack. And since I can't find fire rope around here this time of year and would have to mail order it (outside temps 100+ last weekend, not much demand for woodstove supplies locally) I can happily cross that mod off of my to-do list.