You need to have a read of my comments on both pages in this thread:
http://www.iceinspace.com.au/forum/s...ad.php?t=67876
I had the same issues. You need to make sure you loosen both locking bolts before turning the adjusting the bolts. The locking bolt for vertical adjustment is on the left side and uses the smaller of the 2 allen keys that comes with the finder.
cheers