I had a reputable guy build my motor a while ago. Finally got it legal and took it for a longer ride and when I got back home I noticed some top end knocking. I maybe have 3-4 tanks of gas run through it, so not that many miles on the bike yet. I did have the timing slip, so I reset the timing on it. Just looking for feedback on where to start. It's super disappointing as I haven't even got to enjoy the bike and I'm afraid I'm already troubleshooting problems. My builder has not gotten back to me, so I think he may be MIA. Thanks for any feedback you guys could give me.
https://youtube.com/shorts/APU7rufTpWY?feature=share
https://youtube.com/shorts/APU7rufTpWY?feature=share