Not to question the mothership, but straight silicone seems like a poor fit in this application. Possibly the OPs plane was assembled per plans with silicone. If this were the case, I would not repeat it, as it clearly didn't hold up long term. To the OP, if it was adhered with silicone, you will need to take extensive steps to remove all traces of the silicone, lest nothing will stick to either the door frame or the rubber seal. This doesn't mean just the physical stuff. An invisible residue is left on the surface. Even new silicone doesn't adhere well to cured silicone. You can research effective methods of removing silicone; It is tenacious and very difficult to remove. Painters have the most experience in getting rid of it.
Larry