Mesh animation glitches with my welding

Help and Feedback Art Design Support
1

So this happens and I use this for welding:

local weld = Instance.new("Weld")
weld.Parent = foundPLR.Character.Head
weld.Part0 = foundPLR.Character.Head
weld.Part1 = foundPLR.Character.headcrab_reference

I’m not very familiar with animation, welds or modeling but we have another mesh like that but it’s a bit different and it works for that one. This mesh goes inside the head a bit so I think it’s something with mesh hitboxes but I’m not sure and I need help about this. Animator used Moon Animator’s fast weld and it didn’t glitch for him.

2

I’m still searching for solutions. Can anyone here help me?

3

I’m still looking for a solution.