Lisbon monobloc kitchen taps just installed the

Lisbon monobloc kitchen taps just installed the taps all fine and dry when I turned water back on UNTIL I turned taps on then there was a dribble from the base of the spout. I assumed that I had fitted the spout incorrectly so turned water off and removed spout. I refitted the spout, this time not pushing it all the way to the bottom of the block. Water back on, taps on and all was fine EXCEPT now there is a drip from the spout at the end where water is supposed to come out EVEN with the taps tightly closed. I wiggled the spout a little and it stopped dripping but instead a little water dribbled from spout base. One or the other it seems. The instructions didn't give any mention about fitting the spout. It's a pain as I've just fitted a new kitchen and want the job finished. Any advice would be helpful, thank yo