Camry :: P1351 After Changing Timing Belt?

I recently changed the timing belt on my 2001 Avalon. I am now getting a P1351 code. I removed the timing belt covers and checked the marks, and everything lines up perfectly. I have checked this twice now. To give a little background, before I changed the timing belt, I was getting P0300, P0301, P0303 and P0305 codes along with a P1349. Upon looking up the codes, P0300 indicates a misfire on multiple cylinders, with P0301, P0303 and P0305 indicating misfires on cylinders 1, 3 and 5. The P1349 indicates a variable valve timing issue on bank 1 (cylinders 1, 3 and 5).

I had already changed all 6 coil packs and fuel injectors and spark plugs within the last year (iridium plugs), so I pretty much ruled out any of those. And since the valve timing code was on the same bank as the misfires, I figured that was the cause of the misfires. The oil level was fine, and it hadn't been all that long since I had changed oil. So the next possibility was the solenoid. I changed both of them. Since it was due for the timing belt, I decided to go ahead and change that too. Now, the P0300, P0301, P0303, 0305 and P1349 codes are gone. But after a day or two, the P1351 shows up. As I mentioned earlier, I took the timing belt covers off and checked the belt and alignment marks. All was perfect. I cleared the code. Within a few minutes of driving the code comes back. I checked the belt alignment again. Not loose, and marks line up perfectly. The car runs smooth as can be. I do notice that there is valve clatter on Bank 2. It sounds kind of like a diesel. But it is running smooth. It is also interesting that the original valve timing problem was on Bank 1, but the valve timing problem now is Bank 2. I have only driven it a few miles since the belt change. That's all it took for the code to come up.