For anyone who may be interested. I am reasonable sure I got the problem resolved. I did a careful cleaning and lubed with frog lube. Re-installed the #14 spring and functioned well but still had the failure to lock on last rnd. Dropped back to the #13 and it functions perfectly. Shot both factory and reloads with "0" issues.
Learned that I will not use lithium spray grease and the factory Kimber #14 is probably much closer to the Wolf #13. My kimber is fast and reliable once more. 2" groups at 15yds.
Concentrated power is not rendered harmless by the good intentions of those who create it.