So I found an old leather holster for my 1911, but it is very dry. The gun fits perfect, but sounds like rubbing against cardboard when putting it in. It is very rough on the inside. The belt loops and every part of the holster are just very dry and almost brittle, but not cracked. I was just wondering what to use on this to bring it back to life. Cooking oil? Carnuba Wax? 3 in 1 oil? Any suggestions are appreciated. Thanks