Nice work! It looks great to me!
The presence of Albumin indicates to me you got it pretty hot. And Probably hot enough.
My thoughts are that at 140, maybe your thermometer is off, and you actually hit higher temperatures than you thought.
And that after you let it set, it might have drifted up before cooling down began.
A lot of people think their thermometer is Gospel, they aren't.
If you are happy you got it done, and it tastes good and you don't get ill from, then you done fine.
I'm not one to freak out or be paranoid about my cookin. As long as it gets past my nose, past my taste test, and I don't throw it up, then by golly those acids in my stomach are going to kill anything else that might be left.
I like to cold smoke my Salmon. Then, it gets poached before I eat it anyway by boiling in the bag it is frozen in.
As far as methods, I like Old Fashioned and simple. I always go back to
Herb Good and his advice. I've also done
Bear's Step-By-Step and it was great too.