Many seem to be assuming that we have 7 club tricks. Is Kxx x Qx QJTxxxx not acceptable as an opener or Axx x xxx KJTxxx or any other number of hands where we don't have 7, or even 6, guaranteed running club tricks. We are not cold for 3NT opposite a very sound 1 club opener eg Kxx Kx Qx KQJxxx, although we have all been in worse. Opener actually held AT x JTxx KJT9xx...When clubs didn't come in and JH was wrong that was 5 off. Admittedly oppos now have a very good 4H contract and no double of 3NT is possible in practice. Nevertheless I think 3NT, if bid to actually make, is optimistic beyond words...if bid tactically then I have sympathy...vulnerability be damned. Perhaps my standards for pre-empting are too loose:)