Hi, by the sounds of it, everything appears to be in order.
(Obviously the dish will need adjusting as you have described, swivel dish up/down, move the whole assembly around the pole)
What transponder are you using on 5W?
Maybe try flicking through some of the others, (consult lyngsat).
I would be surprised if the LNB is faulty as you are getting a signal. You could always try the minidish one on it, to make sure, or try your LNB on the minidish.
Robbo
