Quoted from MrMikeman:That's correct. Balance will be due 2-4 weeks prior to delivery.
If the production time for a machine is 2-4 weeks; yes.
I believe the Balance is due when your machine starts assembly on the production line.
IE if you don't pay the balance when asked; your machine is delayed by as many days until the balance is paid.
IE they don't put you in line for assembly until that balance is paid.