Daniel’s 661’s are incredible & I hadn’t heard of any issues but I know he had a falling out with Madsens & he was doing more falling than building saws. You can see one of Daniels 661’s if you have ever seen Pat Lacey’s (stihlslinger)videos in Alaska the black 661 he is running is one Daniel built. I believe Randy at zoo city to be very honest & he’s been porting saws for a long time but he still works a full time job so there’s that. This 572 husky he did for me is badass little saw!