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Roger, I can't speak specifically for the LX200, but I've used the combination I mentioned above (Maxpoint:MaximDL/CCD/Pinpoint) with the Nexstar 11. I significantly improved the pointing, but it I found it still some what erroneous.
The issue you have with SCT's is the primary mirror. No matter who the manufacturer is or the age of the scope, the primary always experiences slight (in some cases large) mirror shifts as the scope slews across the meridian. Point modelling software can correct this, but only if the mirror shifts the precise amount every time (which is unlikely). Regardless, you will certainly improve the pointing accuracy of the LX200 using such software, though I can't commit on how much more accuracy you will obtain. Perhaps download a trial of TPoint or MaxPoint to see where you get.
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