i received a notice to go get code 3 done on dec 17th. I walked in today and had it done in 5 minutes with no problem,24 days ahead of time. I guess anyone could do it. It will probably speed up your approval since the lady who did it told me that the Service Center immediatelly gets a notice that code 3 was done so they could proceed with adjustments.
good luck
ian
good luck
ian