yes i measured at the camshaft. and tightened all the locknuts on the tappet fairly tight. i dont have a torque wrench so jsut tightened them hard. the car runs great but still makes occasional taps - alot less then before though.

specs are as follows for B18B engines.

B18B
INTAKE: 0.003" - 0.005" (0.08mm - 0.12mm)
EXHAUST: 0.006" - 0.008" (0.16mm - 0.20mm)

so i aimed in between. maybe i am unsure about the amount of drag that is sufficient on the feeler guage?

also, after the adjustment there was no noise for abut a week before it came back? Does that mean that they were not tight enough?

Yes engine was stone cold left overnight and was crancked to tdc for each cylinder.