Serrated SAK

[wescobts]

Hello folks, I'm fortunate enough to find and purchase for a good price a SAK-GAK. I really like this knife, but I am having a hard time using it because I cannot find the proper sharpening device for it. The main blade is serrated, and they are small scallops, and all of the rods I own are far too large. I was thinking about the Spyderco 204 ML, and would spend the money if I knew it would work. Do any of you good people have such knife ? and if so how did one sharpen it ? I have tried to contact Victorinox, but no avail. Thanks in advance for all your help.