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Hi, my name is***** code is telling you that your exhaust cams are out of position. Either your camshaft timing is incorrect or you need to replace the exhaust camshaft adjusters (sprockets).
It's either the basic timing or the adjusters. If you have run the adaptions and you still get the code you need to replace the adjusters. I've done many of these for this problem. I'm assuming that you replaced the magnets when you rebuilt the engine. If you haven't tried new magnets you should do that first, otherwise replace the adjusters.
Ok, then i would go ahead and replace the exhaust camshaft adjusters.
If the cams were swapped it wouldn't run. I've got to believe your timing is not correct or you have to readapt the cams. I've had some where I had to repeat the adaption process over and over until it took.
You can also inspect the cam timing through the cam sensor holes. Have you replaced the plates at the front of the cams? If the nub on the plate shears it can allow the plate to rotate when you tighten the cam sprocket. I don't think the scope will tell you anything that you don't already know, the exhaust cams are out of time.