I am trying to establish a value for a used Cuetec R360 which I bought new just before they released their Cynergy model. I reached out to Cuetec but never received a reply, so I was hoping that someone here would care to offer an opinion. My cue has the original 12.75 mm shaft as well as a Katana II shaft that is 11.8 mm and a Cuetec extension that screws into the butt. I know that pictures might help, but I am not savvy enough to do that. I can best describe it as being in good condition with no major flaws or issues...just normal wear. Both shafts have like-new Kamui soft tips, and the wrap shows no wear at all. I paid somewhere around $350 for the cue, another $225 for the Katana shaft, and $40 for the extension. Like many others, I have tried a carbon fiber cue which I really like and only want to sell this to help pay for it. For whatever reason, Cuetec decided to make the new Cynergy shafts only in a size that is too large to match up to the R360 butt, or I would simply buy their shaft. Thanking you in advance for any opinions you care to offer.