ok guys and girls the valve stem oil seals have went on my n/a so have decided to do a bit of head work while the head is off. have the trd 0.6 mm gasket for it turbo cams for more lift and duration, and the head ported and polished.but the guy took a 1mm off the head was woundering would the clearance be ok with the 1mm off the head and the o.6 gasket or has there been to much taken off. thanks for any help rep added cheers joel