Actually those marks on bearings are the original satin finish. The picture doesn`t show it very good. The pick up tube was tight when installed and i was afraid to turn it a whole turn more to get it positioned correctly. I was a bit surprised it was loose, but live and learn. Will plastigage give me a accurate enough measure of the clearances? I`ve heard some like it and others don`t. I used it the first time and should have some left in the shop.