I have a couple of AR's from a DPMS to my new DDM4 V3. When I clean the bolt Carrier of the cheaper ones I get a smooth wet look afterwards. On the Daniel Defense Bolt carrier I can soak it in oil but the second I wipe it down, it gets a dry almost rough exterior. Do you experience this? I know it's clean, and I have tried CLP, frog lube, gun oil, and even mobile 1. It doesn't effect the performance even though I live in a dry desert environment. Is this normal for a DDM4?