I'm also hard on my bike. You can't help but want to be a little hooligan, because there so much fun to ride when there tuned right. So, considering that I test the rev limiter out on a fairly regular basis, I consider the blow-by to be normal.

2004 TA/19'slash cuts/150/45/N3RF TBS needles,no shims/2 1/2 turns out/FZ1 springs/clean balanced carbs/pods/18/44/EK chain/TBS cush drive/Commander IIs/Armstrong GG pads/TTP firestarter/TTP safe start/green springs/Pretech 6 pot/Ricors