I have removed the 17mm bolt on the bottom of my carb to replace the dynojet 146 with a dynojet 170 to run with the airbox lid off.
My questions are:

1. do you take the dynojet main jet adapter out to do this?
or
2. do you unscrew the dynojet and screw in a new one while the dynojet adapter is in the carb?

if question 1 is correct, what size socket removes the dynojet main?

if question 2 is correct, can you do this with the carb on the bike?

thanks for any help you can offer.