Help a newbie on Gerber angles

[lablover]

So..I'm attempting to sharpen my beat up gerber. I looked at the gerber web site and says all the knives have a 15 deg angle on each side 30 deg total. I have a Lansky sharpening system right now and was wondering?? What angle should I use to sharpen this gerber. it has 17 deg 20, 25 and 30 deg on the guide. I tried the 17 deg guide and it scratched the heck out of the blade in the middle.

Can someone help me out here pleae.

Thanks a million

Lablover

 

[GarageBoy]

Ok, dont worry about scratches, worry about hitting the edge. Take a marker, rub it on the bevel of the blade. Place it on the Lanksy, and sharpen at a angle setting. When the marker gets removed off the edge (the edge of the bevel), you found the correct angle