Douglas slipped to only their third defeat of the season when they lost 54-31 away at Northwich in South Lancashire/Cheshire Division One.
They did however cross for five tries to earn them a single bonus point for their efforts.
Nick Hughes, Glyn Hooson-Owen, Carl Markl-Ferns, Daryn Thompson and Liam King were all on target with tries and Bryn Snellgrove kicked three conversions.
With close rivals Glossop also losing, Douglas hold onto their second place.
MGP rider suffered 'neck and chest injuries' following crash in practice
Mauro Poncini fatally injured at Cruickshanks Corner
Sidecars to return to Isle of Man TT Races in 2027
Three-year commitment to class announced
Inquest opens into death of local MGP rider
Sam Naughton fatally injured in incident at Doran's Bend
Nickolas Ellis to make Silverstone sportscar debut
Manx driver entering penultimate round of Ligier European Series