Sounds like you are on track.
If this is your first PB, most of them will have at least a couple hour stall about 170. As long as your smoker temp is in the 225-230 range it will work its way through. I had one sit at 168 for over 4 hours one time, sure gets you wondering what is going on. If it gets to be too long, foiling will speed up the process a little.
I did a 13lb PB that I smoked at 225 and it took 23 hours to get it to 205 once also, it was great, but took a while. Every piece of meat is different. Myself, I like to foil and let sit in a cooler wrapped in towels an hour or two before letting it cool down for pulling.
We also use the SoFlaQres finish sauce (listed on this site} mixed in after pulling. I then put it back in the cold smoker starting up with more smoke in foil pans for about 20 min for some additional smoky flavor that we like.
The neat thing about smoking is that you can experiment and come up with what works for you, your smoker, and your taste bud and .no smoke is ever exactly the same for me. Real fun to experiment and see how it comes out.
