Corsa-B.uk - Vauxhall, Opel and Holden Corsa B Owners Club

Hi There, Got a noisy bearing on the water pump. Come to change it but struggling with the engine mounting. Later models have bracket resting on chassis leg fastened with two screws. This one has a bolt through the mounting and a fastened with a nut, and a set screw as well. The bolt does not have a head whereby you can fit a socket just a round flat head. The nut has been removed and the set screw but the bolt just won't budge. The mounting with the rubber is fastened to the chassis with four torx screws two of which are not accessible because of the aluminium bracket. Grateful for any ideas of how to get the sucker off