I've got a fairly new (about 2 months) Crossbreed IWB holster and love it. However, there is a considerable amount of "squeak" (for lack of a better word) when walking. Tried baby powder, leather oil, leather conditioner, doubling up the rubber washer that holds on the belt clips but nothing seems to work. Any tricks to stop the "squeaking"? Hopefully just needs to break in some more. Thanks.