Check your timing belt cover backing plate, the big metal bit, mine was slightly buckled from a bodged timing job, it was just catching on the top pulley. Also check for loose clips/ fasteners and the throttle bracket on the injection pump, and keep an eye out for anything that looks like a silver powder, which could be pointing to interference with one of your pulleys. Welcome to the site by the way
:shock: cleeeeeeean.... i'd get on that interior though
it could also be the 10mm bolts that holdthe timing belt backing plate onto the head. Where abouts in sunny britain are you Ronnie?