Cafe racer project-issue...got a CB400SF but I’m having issues with it bogging down on me all the time, it’s quite old so it’s had a carb clean and it was ok for a bit but seems to keep on doing it after about 10-15 mins of riding, what would cause this and how do I resolve? Thanks

https://i.redd.it/p4oie6tqexa41.jpg via /r/CafeRacers https://www.reddit.com/r/CafeRacers/comments/ep1144/cafe_racer_projectissuegot_a_cb400sf_but_im/?utm_source=ifttt