I'm not sure if the panels I got were just weak, or what, but I found it fairly simple to remove the old ones. I started by working my fingers under the front edgeand pulling up. The 2stick tape peeled cleanly off of the plastic stock panel. I worked my way around pulling up forcefully on the edge. The plastic panel bends quite a bit as you work around the edge. I was then left with the stock panel and all the tape. I used a razor blade to scrape off what I could then had to remove the residue. I tried goo gone, and no luck. I ended up using a 3M stripper stuff. Still wasn't perfect, but darn close. I sanded the panels, painted them, wetsanded, then painted again. I glued the crest in, and then put the panel on.
Here are the 2 old panels. On the right, u can see how the backside was perfectly clean. I started stripping the other panel, but u can see how the tape was perfectly intact still. The other 2 sides have been razored, but not yet cleaned.