lol i'm like that quite alot, i can tell somehow to do something, but me actually doing it is another matter, i'm quite clued up regarding the head gasket side of things, even though the only two things i won't do during a head gasket replacement is the cambelt (incase i got the timing out, when dave can do it with his eyes closed!) and the exhaust because the bolts are always too stiff and i can never crack them off and undo them lol... x