Shake rattle and roll

Plug wire routing? There is a whole TSB for the Magnums about changing the routing of the coil wire and the 4/8 and 5/7 plug wires so there is at least an inch between them. Could that be part of the issue?
Never would have thought of that. When i routed the plug wires i just tried to make them look nice and keep them off of hot components. I found the article with a lot of detail on how to route them in a factory dodge truck setup. Would I be right in assuming the main point is to keep space inbetween wires and try to keep them from crossing but if they must, do it at a right angle?