I had a lot of trouble with NGK, But some people say there OK,
I used NGK when I was in the trade, Got them cheap !, NO trouble,
But things change ?,
I like Champion now,
The carb does not seem far away to me,
Just leave it ticking over a little faster than you had it and adjust the pilot till it goes the fastest,
Take your time, Then turn it in a 1/4 ?.