How can I fix this issue with weldconstraints?

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#1

I’m having an issue where when the player throws a pilum (javelin) and hits an object when it should just be welding itself to that part where it is, it welds itself but also teleports itself.

GIF:
ezgif-6-da1a862294

Picture of a different throw:

RobloxScreenShot20240226_175342975
RobloxScreenShot20240226_1753429751674×757 577 KB

Code:

function PilumProjectileModule.onHitPilum(Hit, Pilum)
	local NewWeld = Instance.new("WeldConstraint")
	NewWeld.Part1 = Hit
	NewWeld.Part0 = Pilum.Tip
	NewWeld.Parent = Pilum.Tip
	
	if Hit.Parent:FindFirstChild("Humanoid") then
		if Hit.Name == "Head" then
			Hit.Parent.Humanoid:TakeDamage(150)
		elseif Hit.Name == "UpperTorso" or Hit.Name == "LowerTorso" then
			Hit.Parent.Humanoid:TakeDamage(75)
		else
			Hit.Parent.Humanoid:TakeDamage(50)
		end
	end
	Pilum.PilumCanHit.Value = false
end

return PilumProjectileModule