I own a 2004 and have removed several of the badly curled decals myself. I have an old wall paper scraper with a razor. I hold it almost against the rigs side and carefully slide it back and forth and I pull on the loose decal. I have NOT damaged my rigs sides at all. I have removed the worst of the decals and the curled edges on the rest. There will be a ghost of the decal that you can see at certain angels.
I understand you can also do this with a plastic scraper and a blow dryer. Use the blow dryer to loosen the decal and then scrape with the scraper. Do NOT overheat the side of your rig with the blow dryer.
My plan is to repaint the decals in the next few weeks. I have read posts where someone did this and he cleaned all wax off the decal, then sanded the decal lightly after removing the curled edges also sanding those edges a bit.
He then taped off all of the decal including any ghost areas. Clean off any dust and then spray a light coat of paint, allow to dry and spray another four or five coats.
He used Krylon plastic paint. It supposedly stretches with the heat and cold exchange and fills in the cracks of the decal.
If my attempt to do this fails, I will remove the decals completely! I don't expect this to happen as long as I prep it correctly there should be no issue. This guy had done his rig five years prior and his decals still looked good.
When I am done I will post pictures on iRV2.com under "What did you do to your Rv today". Good luck. Lynne
Lynne and Jerry RVM 105
2004 Winnebago Itasca Sunova Blue Ox Tow Bar /2015 Equinox / 2018 White RAD Mini e-bike