Getting a mini map to display roads correctly help?

What I'm trying to do: http://prntscr.com/98cabo

When I run this script to make the mini map, the roads are really small and are not connected at all: http://prntscr.com/98caws

--local roads = game.Workspace.Roads
local mapDistance = 200

--Raycast to local roads

while wait(5) do
	local characterPosition = game.Players.LocalPlayer.Character.Torso.Position

	local p1 = Vector3.new(characterPosition.X-mapDistance/2,characterPosition.Y-mapDistance/2,characterPosition.Z-mapDistance/2)
	local p2 = Vector3.new(characterPosition.X+mapDistance/2,characterPosition.Y+mapDistance/2,characterPosition.Z+mapDistance/2)
	
	local region = Region3.new(p1, p2) --Draw giant box around character
	
	--DrawBox
	local prt = Instance.new("Part",game.Workspace)
		prt.Anchored = true
		prt.CanCollide = false
		prt.Transparency = .5
		prt.Size = Vector3.new(region.Size)
		prt.CFrame = region.CFrame
	
	for i,v in pairs(script.Parent.MiniHud.ActualRotateMap:GetChildren()) do
		v:Destroy() --Destroy old map peices
	end
	
	for _, part in pairs(game.Workspace:FindPartsInRegion3(region,nil, 100)) do
		if part.Name == "Road" or part.Name == "Intersection" then --Make sure it's a road
			local guiObj = script.Bar:Clone() --Create new map peices
				guiObj.Parent = script.Parent.MiniHud.ActualRotateMap
				guiObj.Rotation = part.Rotation.Y
				guiObj.Size = UDim2.new(part.Size.X/region.Size.X,0,part.Size.Y/region.Size.Y,0)
				guiObj.Position = UDim2.new(part.Position.X/region.CFrame.X,0,part.Position.Y/region.CFrame.Y,0)
				guiObj.BackgroundColor3 = Color3.new(part.BrickColor.Color.r/255,part.BrickColor.Color.g/255,part.BrickColor.Color.b/255)
		end
	end
	prt:Destroy()
end