[SA] Help! Converting a rig

[XtremeGamer26]

Hi im new to gta forums. But i know san andreas modding very well and i have done alot i also own a account at gtainside. Now i have some heavy issues with skin rigging. I already done skin rigging and converted many skins to gta sa but my rigging is not perfect, the shoulder areas gets really buggy..

 

So heres the thing

I have a model i exported from a ue4 android game.. it came along with bones rigs and it is rigged perfectly, not even a single buggy part. The problem is since i dont really have good rigging, I don't wanna delete the old rigs and bones of that ue4 game to convert it to gta sa. How can i just convert the bones to gta sa compaitible? Or can i copy the weights table and paste it after converting the mesh to gta format... Please take your time and answer . This is a youtube project

Here's the image

And i just hided the meshes

 

https://ibb.co/2F4MBGR