[hatch]

My triumph guru says....3" intake extensions between the carb and head...also run the small diameter straight pipes. These two things will pick up 1500 rpms.

 

[hatch]

A good friend of mine that was building strokers in the thirties always tuned his bikes this way....Kill switch on the handlebars....WOT in high gear.....hit the kill...pull over and pull the plugs and check em....he said even a short time idling will change the reading....So I agree with the previous post.