+1!
It is really important that your valves are adjusted, fresh plugs, and the CO has been "zeroed."
Make sure there are no vacuum leaks (like a missing cap on the vacuum taps), and it is fairly critical to set the baseline mV on the TPS with a fully closed throttle plate (the RH screw has lots of metal to seat in, so just back it out until it no longer protrudes from the front of the boss). Remember, the cold start "high idle" mechanism can foul the right throttle as well.
Really dirty throttle plates and air bypass screw tips can mess with your idle, so clean these well and try the screws out a full turn.