How I normally do a dev rig.

IK off.

figure zeroed.

Joints rotations zeroed.

Saved to folder.

Then I use my editor and take out:-

Morphs, magnets, materials and weightmaps.

Save back as a different cr2.

Test.

If it works, take out eyes, tongue etc. and retest.

Normally that does it.

All the best.

LROG

Who honors those we love for the very life we live?, Who sends monsters to kill us?, and at the same time sings that we will never die., Who teaches us whats real?, and how to laugh at lies?, Who decides why we live and what we'll die to defend?, Who chains us?, and Who holds the key that can set us free... It's You!, You have all the weapons you need., Now Fight!