need to change the plugs when rebuilding carbs??

I have acquired the new (used) carb for my evinrude that I have been looking for. I have ordered the rebuild kit and it's on the way. I have watched a video or two on line regarding the rebuild process, and noticed that one of the videos mentioned pulling out the plugs for proper clean-out. I also noticed that the kit comes with what appears to be replacement plugs from the pictures. So I guess my question is, is this necessary for a proper cleaning, as I know nothing about the new (used carb) that I just received. It looks like this would be the one area of the carb that it could have serious issues if it doesn't seal like it should, and I was curious what you guys and gals have done in the past?

I appreciate the advise guys! I will do just that, when it gets here I will take care of the COMPLETE rebuild and cleaning. Again, I appreciate the response to what seems like a dumb question!

Never a dumb question.
Would much rather take the time to help someone willing to do the job correctly.

I took the shortcut once and learned my lesson.
We're just tryin to save you the troubles we learned
the hard way.
Good Luck with your motor.

Steve A W