KK has great customer service, too. I bought my Gen1 KK from Craigslist for $125.00. Shortly after I bought it, the adjustment rod stripped out. This was a known issue with the Gen1 units (grey). The upgrade is $17 for older units. I was honest when they asked me if it was an older unit and bought it used. They sold the upgraded part to me for $10 shipped 2nd day air.