Why bothering to use always the codewheel? :-?
I suggest you to download the WHDLoad USR archive from
www.whdload.de and then the installer for F/18 Interceptor from there. :-D
Not that you can play the game from your HD without degrading or anything else doing monkeystyle, you also can use full caches (game will get smoother if you have a faster CPU). Also the patch will remove the codewheel check so you don't need to bother with that again :-)
Try it and register WHDLoad, the best tool made for Amiga imo!!! 8-)