it runs, but clatters

got my new dizzy in the flatty today. runs good, but at the top of every gear it clatters...Why? too much timing? not enough? This is all new to me.....
Cody

 

TYPICALLY-that ping/rattle sound would indicate an overly fast timing setting..........

 

Back it off a little.....OLDBEET

 

Explain clatters?
A pinging flatty sounds like any other pinging engine.

I equate "clatter" to something metallic bouncing around. Like a wrist pin, lifter, etc

 

yes, more of a pinging than a clatter I guess..