I recently purchased a Winchester 1400 MKII 20 gauge. I'm not sure how old it is but is mint condition. I gave it a thorough cleaning and it seems to shoot great. I have a couple quick questions. Does anyone know approximatley what years they were made? It has a plain 28" barrel with mod choke. Also how much, and where do I need to lube this thing? I completely broke it down, and took everything apart including the bolt and cleaned everthing. I'm just wondering where I should be oiling? This is my first semi-auto gas operated shotgun.