Sebastopol solidified its break inside the top four with a clean sweep of rink wins against Ballarat Memorial Sports on Saturday.
The Kookaburras made it three triumphs in succession with a 118-79 victory on their home green.
After taking all 18 points available from the Geelong-Ballarat Premier Bowls clash, Sebastopol sits third and 19 shots clear inside the top four.
BMS has slipped from fourth to seventh following the defeat, with their position snapped up by Victoria after its win over Eastern Park.
Bareena sits second after defeating Webbcona, top team Ocean Grove snuck home in a thriller against bottom side City of Geelong and Queenscliff was far too good for Lara.