I purchased a house that needs a lot of work! It is a 24 year old ranch. The windows and all woodwork had been finished in a very dark stain but I can't tell if there was ever any kind of top coat; ie varnish, polyurethane, etc. There is a lot of scratches showing the bare wood underneath and also damage from years of condensation on the bay window. I would like to refinish these windows but right now have more urgent jobs to do. Is there anything I can do to at least improve the looks of the wood and then refinish when there is time? I considered using Old Enlish Oil Polish with dark stain, but would that be hard to remove for refinishing later? I would also like to use that product on the kitchen cabinets, but I have reason to believe the former owner used Panel Magic. Since that has silicon in it must I continue to use only Panel Magic? Another concern is, might there be a risk of the double pane leaking gas because of the condensation damage. I will appreciate any advice.