hi all long shot but worth asking

bought a 306 1.9 diesel 97 plate non turbo the other week just for running around in,
anyway thought i would check a few things today and found

only 1 bolt holding the diesel pump on so sorted that,but then also found that the cam belt is not sitting on the diesel pump pulley correctly its slightly hanging over by about 2mm.
ive heard that there is 2 diffrent pulley's for these engine's but not too shore.
looks like its been like it for a while,when some 1 has changed the pump maybe,but its not right and now ive seen it i need to get it sorted.

so if any 1 has any ideas on this give me a shout

thx all