Lol yea because I was having that exact same problem when I was shifting fast.

I'm just trying to find a good balance that is smooth and I find if you just give it a little throttle and shift a little slower the car goes into second smoothly. I'm still trying to find that happy medium. Like I said I really just have to do this in congestion because I have a hard time finding the balance when my car doesnt have enough room to roll a little during the shift before I have to brake because of the guy who is panic breaking in front of me.

I also go back and forth between my Z and my dads s2000 and the cluthes are completly different. Once I drive for a day in just one the shifts get much smoother

 

Shifting at 2000 they cant drop too much