Does the dealership have a body shop? If it doesn’t, I think the dealer has been making patch up repairs that don’t hold. If you have the documentation that you had the problem while the car was under warranty, you may have a legal claim. It might help to see an attorney and have him send a cover letter along with copies your documentation to Honda.
Another altermative is to take the car to an independent body shop for an opinion. You may be able to have a repair made so that you get more service out of the car. Your problem is one that I think should have been handled by a good body shop from the very beginning. The service department of most dealers isn’t equipped to do this kind of work.