Spark Plug Gap

ok here are more details on that. Engine running really rough. Code says CMP and CSP correlation off. I have through trial and error determined that a new DISTRIBUTOR is in order. Putting that in tomorrow. Basically going through car and eliminating any variables. Plugs and wires (and cap and rotor) replaced 25,000 miles ago. All looks good for wires and plugs...but that old saying creeps in my head. "When you replace distributor ALWAYS replace plug and wires." That is why I ask about gap in plug. It seems they are in good condition. no excessive color, burning etc...