Sorry had to but my hero lid build on hold as I have had so many side project, jawa's mainly, imperial binders and code cylinders. Anyway if you are gentle with the heat iron you can get most of the extra teeth to push through, once you have done this it is just a matter of using wet and dry sandpaper with soapy water and gently sand the area along the section of teeth that you want to get smooth. Once you are happy with this you will need to sand in finer grades of wet and dry until you end up using 1200 grit paper, when you are happy you can then use an automotive cutting compound to really make the teeth shine. After you are happy clean all the teeth area with warm soapy water so no greasy film reamains, let dry then paint the other teeth.
This is as far as I have gotten so far, I am really happy with the results.