You could also log on and join the Martin Tech forum for some advice. It would be helpful if you can post a picture with closeups not too close) of the cams. Also, if there is a sticker on the bottom limb and it's readable the first two numbers of the serial number designate the year it was manufactured. Also----there is a draw module on the cam and this has or should have a number/letter showing the type and size of module.
I'm guessing that the bow may have Z cams so the module would have 5x or something of that nature on it. I could be wrong, but I doubt it has "F" modules on it, but check and see. If it's an "F" module it would say F5 or something like that. Either of these modules are still available from Martin, but somebody on the Tech Forum may have a few that they'd send you.