I am in dire need of some direction with this car. It is a 09 clubman naturally aspirated automatic around 85000 miles Over the last year I have been dealing with camshaft sensor and related issues. In Recent weeks the car has a very uneven, surging idle. A burning smell as if it is running lean. It runs better when in sport mode. It also just through the following list of codes.

P0014
p0015
0365
0366
0300, 0301, 0302, 0303, 0304
1339

i know what these codes mean but am trying to figure what it all means together. FYI I have recently ( in the past month) replaces both camshaft sensors and both vvt solenoids. Fresh oil and filter, spark plugs and a valve cover gasket. I have a chain tensionerI haven’t installed yet and I don’t really want to. Any guidance is appreciated.

Had the valve cover off when I replaced the gasket. And all looked fine. I have since replaced the timing chain tensioner and it still has an uneven idle when cold and a bit of hesitation until it is good and warm but none of the original codes have returned. In there place I got two new codes.
P0340 x 2
p0341 x 2

so I am at a loss at this point.