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I am viewing it after you've done some tweaks and to me it is very impressive.
Some stars can look elongated when in fact they are merely double stars (binaries) and just beyond the resolution of the scope to differentiate. Some stars of course can be elongated by tilt.
Yuri from TEC did an interesting test on the Feathertouch 3.5 inch focuser he uses in his APOs. The result of deflection tests showed there was slightly less deflection under a certain load when the focuser was upside down. So perhaps try spinning your focuser upside down and see if the tilt persists.
Greg.
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