Captain Greg Hoolihan felt Portsmouth paid for a lack of cutting edge in the final third as they lost 25-3 at Trojans in London two south west.
Hoolihan admits the team have a fight on their hands to push up the league.
But he is convinced they can get clear of the lower reaches.
‘We are getting lots of possession and our ball retention has been good,’ he said
‘All we have lacked is a cutting edge in the red zone.
‘When it all clicks into place I am convinced we are going to get a good win.
‘We just need that first win under our belts.’
Alex Doolan grabbed a hat-trick of tries as United Services powered to a 50-11 win at Alton in Hampshire one.
Doolan grabbed two in the first half and Tom Cantwell also crossed.
Ieuan Clements added the points and converted a penalty, showing a faultless kicking display.
Services raced into a 24-8 interval lead and maintained their domination in the second half.
Further tries by Clements (2), Doolan and Paul Connor put them out of sight.
The impressive Clements ended the game with 25 points to his name.
Locks Heath Pumas enjoyed a 24-13 win over Aldershot & Fleet at Brookfield School in Hampshire two.
In the first half Gareth Mansfield drove over for a try with Nick De Stefano adding a penalty and a conversion.
After the interval, the pacy Damo Sambrook added a second try with De Stefano contributing a further penalty and conversion.
Petersfield lead the table after a 55-5 win at Fawley.
Southsea Nomads beat Lymington Mariners 25-10 at Furze Lane.