Hi everyone. I recently bought a 2017 RC 390 with only 700km on the odo. I was told it was totally stock besides some fork sliders and a tail tidy. However, I've started to notice the exhaust pops on deceleration. I've only owned one bike before so I'm not very mechanically savvy but I did a bit of research and it seems backfiring is often a result of bad tuning. I was wondering if it's by any chance normal for RC 390s and what I should do if it's not.