My truck is 6 months old a when I brought it home I did the AIO and several coats of SG. Now to start over should I just add more SG or do I need to AIO and then SG or do I need to remove everything first and start from scratch, if so How do I remove it? This isn't a show truck, it's my work truck and I just want to keep it looking as nice as possible and keep the paint protected. Thanks