Review on GOOFIT Completed Cylinder Stroke Engine Motorcycle & Powersports by Troy Robinson

Update 4/20/21: Goofit (error seems to match) has NO customer service as stated. Terrible. Update 4/3/21: Goofit just stopped responding. I've been wasting my time for a month. I could have just bought a new cylinder head instead of letting these people guide me. Update: 3/13/21: Goofit replied to a Facebook post 5 days ago which I have replied to but have not received anything. They didn't answer. What does the guarantee say above? Don't expect support. During the second spark plug change, the spark plug thread was torn off. I used an anti-seize, changed it when the engine was cold, and used a torque wrench. Good, but cheap metal will do.