Thanks for the replys, will check top surface of followers once the cams are out. I did start the car yesterday and some of the followers where noisey but the car had been stood for nearly 6 weeks.

Was looking on e-bay last night and Graham Goode are selling a full set of INA cam followers for £74.98 + postage which seemed quite good. May just get a set of these and fit them while i'm doing the cams. Would rather spend the money now and get the job right than have to take it all apart again to change them later.