I have one of those sharpeners that fits in your hand and you just run down the blades, and I don't think it works too well.

After I shot my doe tonite I have 1 blade for sure that needs some sharpening on my Muzzy MX-4s, the other 3 blades are still sharper than most heads out of the package.

So someone has to have a tip/sharpener reccomendation for us!