I recently purchased a Weatherby Mark V that has been Ceracoted in black on all metal surfaces. The finish is great, but what I notice compared to my other Mark V's is that there is more friction when working the bolt back and forth. It does slow down the cycling of the bolt compared to how fast I can work the other rifles. Is there a preferred lubricant to smooth this out, or another method to make it smoother? Thanks for any tips you may have.