*sigh* I guess I'll bust out my PSP, just for you

And don't forget, you can change the directional stuff from 360 to 8 way or whatever, I've heard it makes a difference, but, I kept mine on 360 since I'm used to the analog nub. There's a lil check box in the general section that says limit to 8 Directions, I recommend you do that if you're having trouble with the narrow area's in the mountains!
Ok, push start, go to Option, go to Buttons, press X & go down to Extra Function, to the left of Extra Function, there is something to click on, change it to No-Fall, the other options are Wing Warp or Walk. Now, when you are playing the game, press select & a lil shield will be on the screen signifying that you are in No-Fall mode, however, when you fall down a pit to another room, takes you off No-Fall mode, so just press select again to implement No-Fall mode again.