As mentioned above, if you have some areas that have had fuel soak into them, try this. Take any alphatic glue (I use Titebond II) and spread a thin coat over the area in question. Just use your finger and spread it as smooth and thin as you can but make sure all is covered. Let it dry and then iron on your monocoat. You will be surprised as to how well it will stick, even if you did not get all the oil out.