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don't worry about the cam deviation too much, won't cause any drivability issues until it gets over 6-7 degrees, at which point will throw a code. this happens as the chain stretches and components wear (including the ims bearing)...the fix is to re-time the cams.....
now that you have the cable you can monitor the deviation....

you have an intake leak somewhere after the maf sensor.....
idle range 1 o2 codes on both banks is a leak 99% of the time....

what are the adaption numbers for idle range 1?

the maf sensors are very sensitive, a single drop of oil can kill one fyi.....so be care full how you clean it (i never even touch them)