Oil on pistons?

So as you saw on my last thread,I got My duster running with the new to me 360 that I built and after running it about an hour to make sure that my fans and radiator was Enough to make sure it stayed cool and always stayed at 180° no matter what so I decided to check spark plugs this morning and I have An endoscope to go down into the Bores to actually look at the pistons and make sure the bores were good and I have noticed oil on The pistons that's not very much but it's just a slight little puddle sitting on the piston. I just wanna make sure that it's a normal ordeal for These types of engines so I just want to make sure that it is normal. I did notice my car was running extremely rich when I was trying to tune it and I have a little bit of white smoke coming out of the breather. Even at first start up a basically poof's and I want to make sure that it's okay too. I'm not burning any kind of black smoke or white smoke down at the exhaust area. It actually is nice and clean coming out of the exhaust. It's just coming out of breather a little smoky. I do have pcv valve going to the carburetor and I was going to put a breather to the air cleaner but even when it attached the air cleaner. You see the white smoke coming out of the air cleaner. Also the spark plugs were black also they were gapped at .035. Now I'm sure I was just running so rich it made my eyes burn in the garage so I'm sure that was the reason they were black. I do have a flamethrower coil Sonim going to gap the plug acouople more thousandths.

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