The reason the 1-2 is tough to power shift is due to the large change in ratio between 1 and 2 and the fact that the synchro (which is carbon on 2 and 3 I believe) isn't designed for such rapid engagement.
Honestly dude, power shifting is for losers. These kinds of post are what Honda laughs at when after reading another thread about guys complaining about problems with 3rd gear.
Learn to shift with the clutch and a lift. Check out this vid:
LINK
Fast forward to 2:50, the red Civic that passes, you can hear the shifts, thats clutch and lift. No respectable driver power shifts.
Unfortunately I don't have links to in car from that or the other (#41) Civic, luckily they're plenty loud enough that in car from other cars illustrates my point.
Power shifting is for wankers... don't do it. If you want to no-lift-shift... get an automatic.
-SWRT