Idle problem

I found many little problems before it ran pretty good.

1. My set of MSD super conductor wires had a 1 bad wire from the factory. MSD replaced bad wire.
2. Cast valve covers had twist on PCV hole. Put push in grommet and pcv in place. Did not work well, found twist on PCV.
3. MP electronic distributor had advance springs for full advance at around 1000-12000rpm from the factory. Changed springs to 2500rpm and 22deg full advance.(bought Mallory spring kit for this distr.) My MP ignition kit built around 2003 is known for erratic idle. If your dist. was bought between 2003 and now you may try a diff. one. Pertronic' Firecore,etc.
4. Replaced 3310 Holley with 600 Holley. It runs better with 600 but not sure if 3310 would run better now that other problems were found.

5. Do not think because all parts are new that they are OK. It took me a long time to check MSD wires because I felt that they couldn't be bad.

6. Adapt policy that the part is bad until proven good.

7. Good luck. Post solution if found.