well I just got my 83 1100 interstate last oct. so I've been trying to get it running better. put some sea foam in it to help her out. ran the valves changed the oil, new plugs now I have a knock at high rpm. don't know what it is. when I go though the gears it knocks at the top of gear change . or doing 65 mph it will do it but when I gas her up it stops till I get to a ? speed then it comes back. now when I down shift it don't do it or just setting there running it don't. just don't know what it is .its not getting hot.. she runs great.any ideas ?
(Double post deleted)