I know that Honda 5-spd transmissions are notchy when they are cold. But if you can't downshift specifically down into 2nd gear, then I would think you might have syncro problems with 2nd gear.
What kind of tranny fluid are you currently using? If you're using synthetic transmission fluid, change it to Honda.
What kind of tranny fluid are you currently using? If you're using synthetic transmission fluid, change it to Honda.