I had a huge problem with the lathe crashing itself during the initial usage of the threading wizard. During the preparatory moves, the machine would rapid to a coordinate that wasn't listed in the generated code. The only way to stop it was to edit out the G53. I read the explanation of G53 but must admit my lack of understanding of proper G53 usage. I forgot to edit it out last time I used it and killed a brand new threading tool (and a pair of not-so-new skivvies.) Up 'til now my life has been just fine without G53 so I plan to edit the wizard to prevent it killing more tools or worse.
Having said all that, it must be there for a reason so can someone edumacate me as to why it's there and if it's needed to properly cut threads? I'm getting decent results without it and I think the strange cutting characteristics I'm seeing are due to flex in the machine but I could be very wrong.