Neil Speirs skipped Bryan Cooper, Dougie Mitchell, and James Speirs to a 27-2 win over John McLeod, Allan Colligan, Mark McGhie, and John Ellis in Division One.
The only blow they landed over the 10-end span was a double at the second to stand 2-2.
Mark Allison is a joint-leader on the 8 point mark after four games played and his latest success saw him skip Richard Mark, Alan Close, and Scott Logan to a 15-4 win over Brian Walker, Brian Holloran, George Marshall, and Davie Anderson. Calum Logan made it three wins in four when adding 1, 3, 3 from 6-4 to skip Blair Mackie, Barry Sword, and Raymond Logan to a 13-5 win over Stuart Isbister, Stuart Smith, Graeme Eddington, and Graeme Lees.
George Sneddon is already 4 points adrift of the leaders but showed winning form when cashing in on a 4, 4, 2 start to skip Stuart Johnston, Liam Fairley, and Des Hagart to a 21-11 win over Gary Clelland, Ewan Wilson, Ewan Shearer, and David Wilson.
West Lothian beat Balbardie 100-47 in the Scottish Cup. Balbardie lost 77-75 to Headwell at Falkirk in the Team Championship.