So i have a 06 v spec and when shifting thru the gears the rpms jump about 300-500rpm and hang there for a second every time i push the clutch in the go to the next gear. BUT if i let off the throttle a second or 2 before i push the clutch in, the rpms drop down like it should. i thought the throttle body was sticking but it still does it even after i cleaned it spotless. also checked for vacuum leaks and didnt find one. its drivin me insane and every thread i read people are saying its normal, but i really find it hard to believe nissan designed the car like this. i hope you guys have some insight on it and help me solve the problem.