You may be on to something. I know mine is a 60" with rings, and there are also 58" ones out there. Some have rings and some don't Maybe ferrule lengths differ too. These Jackpot cues are sounding more like one of a kind customs the more I think about it. That's it, I'll sell mine for $700 if anyone wants it!
Why would a cue maker produce a non-uniform batch? Almost sounds as if some cue maker held a ten person cue making class, with each student getting to build the same cue but of different lengths, with different ferrules, and with or without ringwork. And then off to the market they went!