Originally Posted by bonesmutley

So I used the hotter plugs and it ran great for a goal for 3 hours of riding over several days. Took it to my mechanic guy and he did a comp check and it had 85 in rear and 90 something in front, I thought that was bad but said it could be fine depending on what's been done to the motor. From what I've seen in the manual 90 and up with no more than 30 psi difference between cylinders. Anyways he thinks it's a jetting issue and its fouling plugs and leaving gas in the cylinder. The bike had straight pipes 2 years ago and last year I swapped a 2-1 With a shaker upsweep so that could be my problem.
What I don't understand is how I was able to ride all last summer without this problem. If it was the jetting wouldn't it have happened sooner?

Thanks for your input guys!!!!