Workington Town coach Gary Charlton has warned his team they must improve their attitude to combat inconsistency.
Workington are joint fourth after losing Sunday's clash with Rochdale Hornets 45-20.
Charlton told BBC Cumbria: "We can be very good one week, very poor the next week and that's the thing that we've got to get out of the lads' heads here.
"We've got to get that sort of mentality out of them and come with the right attitude week in week out."
The Hornets defeat came just a week after an excellent performance and a resounding 36-16 victory over Swinton Lions.
So far this season Workington have only managed back-to-back league wins twice and Charlton believes it's his side's defensive play in particular that is to blame.
"We can't keep on defending the way we're defending because you give teams a good ball in a good position, you know they're going to score tries," he said.
"The biggest thing for us is to play rugby like we can play."
Workington Town are currently level on 28 points with Whitehaven and Rochdale, having won seven games, lost seven and drawn one.