I just replaced the main spring housing on my Kimber with a stainless steel model from Wilson. The new part went in well, but I noticed that the plunger/spring is much rougher when depressing. I put some tetra on the spring and tetra grease on the plunger, but it is still a little rough. Of course I can now feel this roughness when cocking the hammer back. I also noticed that once cocked, the "overtravel" from hammer/sear engagement to maximum hammer travel has more resistance and might be slightly reduced. Should I be concerned about any of this? Do you think that this will smooth out with some use? I am going to the range this afternoon and will give it a try. The new part sure is much nicer!