So when you did 17.3 did you find that when you started to fatigue your kipping in the chest to bar pull ups got a bit dysfunctional?

Check out this video from WOD prep that goes over the basics of kipping.

Check out WOD preps channel on the link below:
https://www.youtube.com/channel/UCNRMF4aKRFUCdzvJVBEMFdQ
Always make sure you have adequate strength before you start kipping.

You should be able to do strict pull ups before you do kipping pull ups.

You should be able to kip consistently before you try butterfly pull ups.

Give your body time to adapt to the new training load.

You can’t get butterfly pull ups in one workout.

They will take time.

There are no short cuts.

Practice.