Thank you, appreciate the feedback. That’s good news. I do not feel that my z650L has a jerky throttle,may be I got used to it. I will inquire about the booster plugs though. My experience is, the bike does not want to rev beyond 4.5K.
It’s quite smooth at low revs but beyond 4.5 k feels harsh and vibey. I’m hoping that derestricting will make it smoother as it will rev more freely.