Just bought a 2012 SFS she's only 1 months and 3 weeks old. I CAN'T REMOVE E CLUTCH COVER. I've remove the necessary screws holding the cover but its like stuck to the case. There's a rubber gasket which i assume is holding up. I tried to knock, pull, twist but it still wun come off. Is this normal or do I have to really use strength or a specific tool to separate e cover from the rubber gasket.