Our machine only requires one line "interrupted" to get all the fluid exchanged. I have seen too many shops cut steel lines and put them back together with pieces of fuel line and not sure what machine they use, if they use a machine at all. 
Don't worry Irv, everyone has their own way of doing things and if it works, more power to you. :biggrin:

Don't worry Irv, everyone has their own way of doing things and if it works, more power to you. :biggrin: