Hi all, thanks for letting me join the group. I have a 2005 zaffy b auto z22 yh which makes a terrible clattering on startup worse after being stood overnight. The timing chain has been replaced which was a full kit inc ballance chain. Also was mapped at the same time. Is it a major to change the lifters ? I used to be a member of the facebook page and discussed this problem with carl evans. I put up videos of the noise and never really got to the bottom of it. Its getting worse now and I fear damage may be being done.