Finally got around to painting the windscreen frame! I also sprayed Penetrol into the gutter cavity while the front section of roof lining was out. Of interest was the Penetrol seeped out the seam at the top corner of the frame (where the factory braze joint is) and ran down the frame pooling in the bottom corners. This seam is covered by the roof lining section that wraps over the inner lip and runs down the windscreen frame, so no matter how much caulking a windscreen gasket has on it, if water can get there it will still leak.... (I had wet foam backing to the lining that runs down the edges of the frame prior to pulling the windscreen and just assumed it was leaking past the gasket....)