So this fellow looks fine as a ragdoll
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3525038610
but when I apply anims to him, his arms and hands are twisted around wrong (except his fingers) and they bend the wrong way when i move them with the physgun
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3525038932
I've used the Proportion Trick, so I don't know what's wrong or how to fix it.
Any help is appreciated

It does this
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3398819075
I've tested it with with other weapons as well as workshop sweps, and the crossbow is the only one that causes this. How do I fix this?

Ok
Still don't know why the anim would affect the mesh at the waist specifically like that. It looks like the scale for that bone is off.
Thanks for replying!

I also did try to parent the mesh to the male_07 skeleton with automatic weights, but it threw an error at me, "bone heat weighting failed"

Er,
How do i change the model to make this work?
(This is the first time I've attempted something like this)
I also don't understand why the anim would squeeze it like that, if the roll of the bone is what its supposed to be.

I ported this from an Unreal 5 game and renamed the bones
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3393706983
HL2 animations originally butchered the whole thing, but i fixed it using bone roll, using the male_07 skeleton as a reference
Now when I use the anims again, it squeezes the waist, specifically at ValveBiped.Bip01_Spine1
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3393707104
Gmod pm layer animations don't do this, only HL2 anims and I'm clueless on how to fix this.
I'm also not sure how to fix the hand and finger bones, as the male_07 skeleton has its arms straight while this mesh has the forearms bent foward a bit
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3393707198
Any help would be appreciated