Using LateUpdate and OnAnimatorIK = wrong. What is right?

I'm adjusting bone position to create body types (see image) with LateUpdate.
Unfortunately this means i need more IK, as well as breaking the current IK pipeline. The problem is obvious, IK executes first, and late update wrecks it if those bones are touched.

Is there a right way to do this type of variation that I am just completely missing.



I'm have considered a few solutions but they feel stupid, such as IK at LateUpdate (feels like a lot of work), or pushing the bone adjustment into the IK solver (too many race condition and exceptions).

Update 1: I moved the adjustment into OnAnimatorIK, and it did not change the problem. Does the IK solver cache?

Update 2: I spent a few hours trying AvatarBuilder.BuildHumanAvatar.. This was an undocumented rathole, I got it compile and attach but not animate at all. This doesn't seem like a common approach.

 

Hi, have you found the solution? I met the same problem as you.