One of the most impressive transformations I've seen in a while, esp in 3 months. Nice work Scrawny.
Don't get too worried about the BW thing. Just keep eating. And remember, eating 'dirty' as you call it is not always the best way to add LBM. Its great you don't get fat like my big ass, but you can also limit your gains if your not getting good whole foods. And alot of them.
When i am gaining, i do a cheat meal EOD. And go big. Another thing i do is Sundays are all day cheats. So i eat clean most of the week, but i get enough stim from the cheats as well, and they are big cheats with lots good kcals, which is what you want if you are going to cheat IMO.
Here's an example of my old SUnday cheats
Meal 1 - Cracker Barrell
2 stacks of Pancakes with lots of syrup
4 egg whites scrambled
8 pieces of turkey sausage
Meal 2
3 PB & Js
Lg glass Milk
Meal 3
2 Dbl Qtr Pounders w Cheese or 2 Quad Stackers
Lg Fries
Hershey Pie
Meal 4
3 PB & Js
Lg Glass of Milk
Meal 5
extra Large pizza from Papa Johns w Sausage and Extra cheese
Meal 6
3 PB & Js
Lg Glass milk
Give it a try.