When your scope is pointed too Your Zenith it should read -33 DEGS which is taken from the Equator not the Zenith .
It should not read 90 deg.
IF you read the article he said the PROTRACTOR should read 58 deg.
Your scope gauge on the mount should read 33deg, well mine reads -26.38 anyway and I have had mine permanently mounted for nearly twenty years.
Maybe the newer ones start from the pole and work back
The Pole is aproximatly 58deg from your location so you should read 33degs or so.
Cheers