I have seen such kind of posts before and I would say the same thing I said before, that if you are getting such big difference by adjusting the time delay afterwards, then it is indicative of the need to re-run Audyssey and this time follow instructions to the letter. That includes the settings at the sub, such as bypass all local the local crossover, or if not possible, setting it to maximum, set phase to 0 etc.
There will always be some different, better or worse by fine tuning the time delay manually after, but it should be not that much and in my experience it is better to clearly mark the setting before any manual adjustments so that you can always go back to it if things start to head south. Also, such adjustments should be made a little at a time, and try both direction and only keep going (again, just a slight increment each time) in the same direction once you know for sure you are gaining ground.