Go online, request the forms from the ATF, follow directions and send back in
There is no full FFL, If you mean a dealers 01 FFL that is a just a different classification and usage
The 03FFL is a full FFL not a second class after thought
I have had my C&R for about 10 years now. I just moved to AZ and I forgot to update my license. I ordered a firearm online and the dealer would not send it to me until I updated my license with my new address. It took about a month to do the update. My fault totally. So if you move make sure you update your license