Hello, I was out riding today and noticed a rattle/vibration noise coming from what I think was the front of the bike. The noise is RPM specific but I starts at around 50 mph in 6th gear. The sound is not there while idling or taking it easy around town. I just added the EJK with air box mod, snorkel removed and removed the spark arrestor from my stock exhaust. I have a FMF Powercore being delivered Tuesday. Thanks for any info and help.