Towards the end of the video you can see the engine RPM going up and down. Between 3-6k rpm at a constant part throttle, in gear riding, or in neutral stopped, the engine surges. I changed the spark plugs last month and have only ridden it a few times since, but the past 2 rides I've noticed this surge and can recreate every time. -Replaced the gas -Checked for kinks -Checked for any air leaks -Re-flashed the tune to make sure it isn't that -Gave it an Italian tune up. Above 6k rpm or with big throttle inputs it's perfect, pulls like it normally does, just that 3-6k surge on cruising throttle. Any ideas?