Moral of the story is, it looks like your better off dealing with the ice and show build up and running fish bones as apposed to better boards that compromise your tunnels structural integrity.
Actually if installed properly the better boards make the tunnel way stronger than stock.. most of the tunnels that have had problems running the after market boards is because they didnt run enough rivets when installing them. If you put a rivet at each cutout your boards will be much stronger. IMHO