The engine being bolted to the mount. When we first did this (seen in the 'Engine' section), we had to use a crowbar to coax the mount to fit the engine mount tabs. My ever resourceful father this time simply uses a little nudge from below with one of our hydraulic jacks to tweak things into position. Lining up the boltholes was actually quite easy! The Reiff Hotstrip engine heater is seen on the oil sump top left.