Damn right - bottomless pockets req., lottery win would come in handy too.

One point - generally get normal tap from lifters from cold for a second or so - this second noise only occurs AFTER lifters has quietened down - hence led me to think that - lifters fill with oil - valves open more - and then make slight contact.

Anyway, if I rebuild the lot then i'll eliminate it either way - so irrelevant really. Your advice is enough for me not to risk just head work.

2 lucky dips this week........