[Ghostt]

PreGen here as well, and flat too, I would think that a mis-alignment might happen if the chain is not adjusted properly, unevenly on both sides causing it to be slightly at an angle, and/or too tight.

Also how's your chain maintenance? How often do you lube?, clean? Etc? All these things have a lot to do with chain longevity.

Or something is out of alignment worn, bent, etc..... Has the bike even been in an accident? Down? Dropped? Etc??? Any modifications?? Non-OEM equipment??? Etc????