It sounds very much like what I was dealing with as far as bogging down at about 4000 rpm. Do you by any chance have inline fuel filters on the lines? I did, on recommendations from TonyO, OleDirtyDoc, GoofyFoot2001 and Spockster, removed them to just straight fuel lines. Problem solved, runs like a champ.
VN700 project bike 98% completed!!
68 Bushwhacker this winters project (in the works)
86 Honda GL1200i (winter project #2)
82 kz440 daily rider for now!
A few clowns short of a circus now aren't we?
Last edited by bullwinkle; 07-07-2018 at 02:07 AM.