Model deforms when welding at runtime

[notsad2 (nots7d)]

i have a blade model that gets attached to the viewmodel, position gets set at runtime and then the model gets welded

however, for some strange reason, the bladeGrooves part (the part that’s disconnected from everything else) seems to not follow those rules, because it is not connected to the blade (when it should be)

all parts are welded (and jointed) from straps, straps is also the primary part of the model:

this is what the model should look like:

i’m not really sure what the issue is, or could be

---

AttachAbility = function(viewmodel: Model, class: string)
		if not abilityOffsets[class] then return end
		
		local abilityFolder: Folder = abilityModelsFolder:FindFirstChild(class)
		local abilityModel: Model = abilityFolder:GetChildren()[1]:Clone()
		
		local attachData = abilityOffsets[class]
		local attachTo: BasePart = viewmodel:FindFirstChild(attachData.childOf) or character:FindFirstChild(attachData.childOf)
		
		local firstPersonOffsets: {[string]: Vector3 | CFrame} = attachData.firstPerson
		local targetCFrame = attachTo.CFrame * CFrame.new(firstPersonOffsets.position) * firstPersonOffsets.rotation
		
		abilityModel.Parent = viewmodel
		abilityModel:PivotTo(targetCFrame)
		
		local weldConstraint = Instance.new('WeldConstraint')
		
		weldConstraint.Part0 = attachTo
		weldConstraint.Part1 = abilityModel.PrimaryPart
		weldConstraint.Parent = attachTo	
		for _, part in abilityModel:GetDescendants() do
			if part:IsA('BasePart') then
				part.Anchored = false
			end
		end
	end,

[notsad2 (nots7d)]

nevermind, this is simply an issue in my model that i somehow overlooked