I know that there have been a number of threads about soaking a razor in mineral oil, but none of them have answered my question of: how long to soak for? I am currently soaking a 1940's British Rocket that I got off eBay. The TTO works slowly and the silo doors do not open completely. I soaked the razor overnight and there has only been a slight improvement. Should I soak for multiple days or for as long as needed until it loosens up?