In the past when I was preparing a motorcycle gas tank to be used as a plug (tank was automotive paint with 2k clear) I was able to apply the semiperm release without concern of damage to the paint/clear coat and use a caulking material between the flange/part gaps. This was also amenable to a semiperm for release. 
> I'm wondering if using a fillet wax in the flange/part gaps and using a semiperm will be possible? Perhaps I don't even need to worry about the release properties over the wax itself since it will be sacrifical and soft anyways. Would the semiperm dissolve the wax? I use frekote 770nc release.

Hanaldo, I too was finding a bit of matting of the finish with semiperm. Thanks for the tip ajb100, I didn't even think to use wax over the semiperm. You don't suppose that the wax could have componenets that could deteriorate the semiperm? I'm assuming it has never negatively impacted the release you get?