My problem, I get a bit " Precious " at times 
Back on subject, the Tec and HT cams are a bit noisy, I believe I have identified the cause, it is because of the closing flank of the Cam lobe.
This is just for an example and is not the Cam in question, see the contact point of the blade?
Compare to this pic.
Doesent look like much but this "dip" arrests the rocker and helps it keep in contact with the Cam as it allows the Valve to close.
Back on subject, the Tec and HT cams are a bit noisy, I believe I have identified the cause, it is because of the closing flank of the Cam lobe.
This is just for an example and is not the Cam in question, see the contact point of the blade?
Compare to this pic.
Doesent look like much but this "dip" arrests the rocker and helps it keep in contact with the Cam as it allows the Valve to close.