DURHAM – The Durham Thundercats have some heavy lifting to do if the WOAA Senior AA club wants to extend its 2023 postseason. Eighth-seeded Durham trails the No. 1 Seaforth Centenaires 3-0 in their best-of-seven quarter-final series, following a pair of losses last weekend. The Thundercats fell 3-1 in Game 2 on Feb. 10 in…