Returns with Light Manufacturing Best Practices?

We use NetSuite with the Light Manufacturing module and I'd like to know how other people with a similar setup are repairing product that comes back from customer returns, but accounting for the parts used in the repair within the system so those parts are appropriately decremented from inventory.  I don't believe manual inventory adjustments are the required way to handle this, but would like to hear from others how they repair items and account for the inventory used.

Also, once their RA is received and repaired, how do they ship it back out to the customer again using NetSuite?  Do they create a new sales order or is there an easy way to ship directly from a RA?