I installed a new timing chain and had all 7 marks set. Then released the tensioners. Check the timing and it’s off 1 tooth. Redo everything and check - off again by 1 tooth. I finally redid it and put the engine back together. Now I have a P0016 code for crank and cam sensor issue. TIMING IS OFF!!! Do these chains have to be set back one tooth??? I watched and read 1,000 articles and did as I thought I should.