egads;25454 wroteWhiteout is what I have used in the past for marking.
Sorry I hadn't referred back to the various comments (including your's) , how did the operation go generally speaking? I've fiddled about over the years with most of the bits and pieces on cars that've owned but have steered clear (no pun intended) of stuff like the front end and timing etc. I should actually make sure I've go the right power steering unit before ordering, haven't checked whether it's a CAM or ZFK, will do that tomorrow...