I have a 29-2 6.5" N142XXX that I was told was unfired ANIB. The seller said that the gun had the original "factory grease", however, when I got the gun and looked it over, I noticed that this "grease" was almost like a brown/black tarry substance that the gun was coated in on its exterior. The funny thing is that upon removal of the grips, there was none of this grease present on the grip frame or sideplate in that area. My question is did the factory ever even put "grease" on the 29's in the 70's prior to shipment, and if so what was its color/consistency? I would also assume that if they did, then all of the gun would have been coated, even under the grips. Also, hoppes no. 9 or clp breakfree will not take this stuff off completely so would anyone have any recommendations on how to remove it?