[Bruce Edwards]

Bruce,

First off white on the plugs in not a good thing. Sounds like it may be a bit on the lean side. The normal color for plugs when everything is right is light tan. Have you tried pulling on the choke as you drive the car? If the car is lean as you pull the choke on the engine will start to feel and sound stronger and the miss will go away. If it is to rich, no way in your case, the engine will start to load up and black smoke will come out of the pipes.
Before you dig into any other "problems" try this. It is quick and easy to to do.
Remeber when it comes to working on and repair or even building cars K.I.S.S. Keep it simple stupid. Words to live by!
Look for the easy stuff first! It could save you a lot of time and work.