Hello Im getting ready to install the front and rear windshield in my 66 chevelle and have a couple of questions.I sprayed etching primer around the window channel after I put in metal.Does this need to be bare metal for the windshield install.Also what is the best stuff to put the window in with.Ribbon or beutel type sealer.One last question is do you wipe the window off with any chemicals such as alcohol or anything else..thanks