ok lads i got alot done today and lost bout 45 stone while doing it in this heat lol!!

i whipped the head off and checked the gasket ect and all was fine so i was starting to get a bit pi**ed!! then when i checked to see if the head was warped i noticed some small gouges between the valves and water jackets in a couple of different places... so instead of getting that head skimmed i decided to rob my m8s head which he had just had completely rebuilt with a kent cam, i whipped out the kent and changed it with my power enginiering cam and put it all back together and voila!! no more over heating

so thank you all for your advice