Have a miss in the motor of one of my vehicles (70 Ford 302). I started by changing the cap and button this helped alot, but not gone, changed carb and is even better. But it still has a miss. The distributor is a points type with a photronex pointless conversion (about 1-2 years old) has never given any trouble but the plug wires look good and the plugs do to. You can remove certain plug wires and it will almost die out but others have no effect. The cam is a Crane unit and the heads are good. Runs fine but I can tell there is a miss and it's driving be crazy. Really only noticable under 1000 RPM. I want to keep the engine loking completely stock including dis and coil. Any suggestions.