I heard a rumor that the 63 putz was having some structral /Operational defects. Defects Like Uncontrollable boom bounce, boom sway, turret cracks. The reason Im asking the company Im curently with may be looking in to a 63m in the near future.

It is no better or no worse than any other new model from any manufacturer. No structural problems that I have seen, a few system problems but about what you should expect from the biggest badass on the block. Like everything built by man; someday it will not do what it is told. The customers sure love it. :)

its a concrete pump

Ya throw enough rocks at a thing and ya know sumthins gonna break! :p