Swapped my YZ250 last year for a 2006 250TTR and love it. Had no issues until a moderate crash put the throttle grip into a bind with the barkbuster. I had to remove the throttle assy to correct the problem, I had no issues with the reassembly but the bike now idles very rough with a mild backfire and seems to run hot. Because of the throttle jam the bike would not return to idle so I do not know if the crash caused the rough idle or if I did something wrong with the throttle cables.
I can find nothing out of place so any advice would be great.
Might also be worth checking float height and that the needle is seated properly? Before anything else though, I would bung a new spark plug in ... ya never know ... ?