I noticed that Anakin's saber in ROTS does not only look totally different than Lukes's in ANH, but it is also made of a different metal. I believe Anakin's is made out of Chrome while Luke's is made out of Nickel. How was Obi Wan able to make that modification? It was already a stretch from the design and wrong side clamp. the only thing similar is the flashgun style. Why did Lucasfilm do this when it's so inconsistent?