Get a Block sharpener. They are cheap and will sharpen serrated blades quick. Just Google "Block Sharpener". You can watch a demo on how easy it is on You Tube.
+1 on the block sharpener. I use the longer serrated blades and sharpen them after every use.
I have the same blades for about 2 years now. But then again you probably clean a lot more fish than I do..lol!!
Im going to try the Block SHARPENER, I had several correspondences with the owner, Paul Block, and he assured me they sharpener will get the blades sharper than new. money back gaurantee, they sell for around 20 bucks, 2 for 30. theres a new style that is a couple dollars more that has slight improvements to the handle grip.
Many living in this generation shall never see the grave, JESUS gave us revelations and the time is very near. Dont be a soul that stands before GOD on judgment day and be told "depart from me, I do not know you".
REPENT, RECIEVE, REJOICE!!!