This seems to work for me {refractor/90"diagonal/eqmount}.....after setting up the EQ mount roughly due south and declination set for my location I first find a suitable star to the east for the altitude correction and make sure it lines up with the illuminated eyepieces cross-hairs when moving both axis {also check to see if the finder-scope is centred correctly, helps finding a star in the next step without moving the illuminated eyepiece in the diagonal}. Once that's done use your dec drive to highlight the movement and place the star on the cross-hair that's right angled to it. Closely watch for declination drift, if there is any use your altitude adjustment to move the star the opposite direction. Repeat the procedure until there's no dec drift after 5 mins, stop watch comes in handy to monitor progress. Once your happy slew the scope so its lined up with a suitable star approx above you and proceed with the azimuth correction. Go through the same procedure again but instead of moving the star in the opposite direction use the altizimuth adjustments so the star moves in the same direction as the drift movement. Anyhow this how I do it