Soaking and swapping No. 2 Carb KZ750e1

So after ruining the no 2 carb on my bike by breaking off and destroying the pilot jet threads, I am going to swap out this new-old no2 carb from a kz750e2or3. I want to soak all the carbs and clean them really well before putting the bank back together. I was wondering if I should take this last little bit off the carb before soaking it? In my service manual there isn't any parts breakdown for this specific part of the carb and I thought maybe it is best to leave it alone. What do you guys and gals think?

What are you soaking it in?
Steve

Hey Steve, I've seen different things online...lemon juice, pine sol, what do you think I should use?

Tim

Doesn't look too bad to me. I'd use spray carb cleaner. Use a wire brush strand or guitar string on the pilots.
Steve

Be sure to remove the pilot screws and then use this stuff.