Why are these Motor6D joints going in the wrong places?

I've been trying to make a script that puts a part at the edge of the arms of the character, and have it pivot on that same point. No matter how I script it, the join always end up anywhere but where I desire it. Image of what I mean by going in the wrong places.

game.ReplicatedStorage.HandFE.OnServerEvent:Connect(function(plr, char)
	local bruh = Instance.new('Part')
	local hurb = Instance.new('Part')
	local armDes = char['Right Arm']
	local armDis = char['Left Arm']
	bruh.Parent = char
	hurb.Parent = char
	bruh.CanCollide = false
	hurb.CanCollide = false
	bruh.Massless = true
	hurb.Massless = true
	bruh.Size = Vector3.new(0.5, 0.5, 0.1)
	hurb.Size = Vector3.new(0.5, 0.5, 0.1)
	bruh.Transparency = 1
	hurb.Transparency = 1
	bruh.Name = 'RightGrip'
	hurb.Name = 'LeftGrip'
	bruh.Anchored = true
	hurb.Anchored = true
	armDes.Anchored = true
	armDis.Anchored = true
	bruh.CFrame = armDes.CFrame
	hurb.CFrame = armDis.CFrame
	local weld = Instance.new('Motor6D')
	local wield = Instance.new('Motor6D')
	weld.Part0 = armDes
	weld.Part1 = bruh
	weld.C0 = armDes.CFrame * CFrame.new(0, -1, 0)
	weld.C1 = bruh.CFrame
	weld.Parent = armDes
	wield.Part0 = armDis
	wield.Part1 = hurb
	wield.C0 = armDis.CFrame * CFrame.new(0, -1, 0)
	wield.C1 = hurb.CFrame
	wield.Parent = armDis
	bruh.Anchored = false
	hurb.Anchored = false
	armDes.Anchored = false
	armDis.Anchored = false
end)