Hi, I'm after some advice regarding my SLX-39. I'm starting soon on a building but my SLX-39 doesn't quite reach the top windows. I can't afford to buy an Xtreme or similar but I'm prepared to buy the extra couples of sections that I need. Does the SLX perform ok over 40ft or am I wasting my money? I won't need to reach over any awkward roofs etc, it's just straight up and down with easy access. Any advice or past experiences would be much appreciated, cheers.