tehMike- I had the same problem on one spot of my hood on the corvair. Turned out to be contamination before I painted. Let the paint harden longer- in direct sunlight if you can and then wetsand the area with 600 grit. When you sand, you will probably get little paint flakes coming off in that area- keep sanding until no more flakes come off and it is sanding normal. Then wipe it down with mineral spirits a couple times. The paint over it. as long as all the contamination is gone, it will stick. If the paint continues to peel, you may need to sand down and redo the whole panel.

Good Luck