by BretMan » September 22nd, 2008, 8:30 pm
I would try lanolin or Lexol and then break out my homemade glove mallet (an 11" softball attached to a sawed-off wooden bat handle).
One product that I have used on really stiff gloves is Doctor Glove glove foam, from Franklin. It contains lanolin, plus neats foot oil. As a lightweight foam, it adds no extra weight to the glove at all- even if you slather it on.
Be aware that the neats foot oil will tend to darken leather a bit, if that is a concern. But this stuff is great for softening stiff leather and breaking in stiff gloves.