I have a misfire in cylinder 1

What is your question?

I have a misfire in cylinder 1 and I can't figure out for the life of me what it is. I have replaced the spark-plugs (NGK Double Platinum) the coil packs and the camshaft position sensor. It shakes at idle but when driving its fine. When I put the code reader it came back with P0301 and P0343. Which it misfire cylinder 1 and camshaft position sensor. We cleaned the fuel injectors and changed the camshaft position sensor and with the camshaft sensor it got a little better, with us cleaning the fuel injectors it didn't change anything. I heard maybe a pcv valve, and I may have got to cheap of coil packs but I dont want to keep guessing and buying parts that aren't fixing the problem. I have to smog it soon but with the check engine light on its not going to pass. I only have had the car 2 1/2 weeks and got to drive 2 times. Please anyone who can help me i would appreciate it. PLEASE HELP ME!!!!

How long has your 2006 Audi A4 Quattro had this problem?

2 and 1/2 Weeks