I have just completed the process of removing my three Bomar hatches from my 1984 Catalina 30. I removed all the paint and I am planning on leaving them unpainted in their natural aluminum state. Is there a product to clean and polish/protect aluminum? I also removed the tinted glass. I would appreciate any advice as to re-bedding both the glass and the hatch frame itself. It looks as though both the glass and the hatch were bedded using butyl caulking but I am not sure. So, my question is should I use butyl caulking to secure the glass to the hatch frame and also to re-bed hatch frame to the deck or should I use marine grade silicone on both? Should I use silicone for one and butyl caulking for the other? Lastly, can you purchase butyl caulking anywhere other than a marine supply store? Thanks in advance!