I had to set the arm to spindle distance at 222mm to get the correct geometry with a Shelter 9000 (also the 90X). At 223mm I had the same result as you. Fortunately, changing this distance on my Nott. TT was easy. I used a Feikert protractor and Lofgren geometry for these measurements. BTW, the new Encounter with the dual pivot bearings and carbon arm tube with upgraded wiring (balanced wiring used on conquerer and enterprise) represents a huge improvement.
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You can try printing your own protractor here http://www.conradhoffman.com/chsw.htm
Scroll down and download "Custom Arc Template Generator...."
Be sure to read the "notes" section of the README file.
Once you download,use Lofgren A. You can plug in the values using your tonearm specs from here http://www.tonearm.co.uk/encounter.htm and choose "IEC". Your inner grove radius should be around 60.3 and outer grove around 146.45. After that, you will see that the computation for the Effective length and offset angle are verified to that of the arm specs.
When you generate the template/protractor and still have the same problem, then the 223 mounting distance is incorrect. Otherwise, you cannot use Dennesen for this particular arm is my guess.