Once again thank for the help in suggesting what could cause the overheating, the best part of 6 hours yesterday were spent in trying out your suggestions. This morning whilst taking it for a spin, the temp moved up slightly from normal, but then the fan kicked in and the temp went back down!!!!! so hopefully and keeping everything crossed it seems to be ok, will check the water level each morning just incase, but finally all seems well, now on to problem of the rear window not opening from the cab!!