The T200s all have the flat on the shaft. Had to be careful when reassembling as needs to be in just the right spot to move freely but with minimal play. I’m assuming the motor could vibrate/shudder if there is too much play and felt like it jammed on the nylon protective ring on the stator if too tight.
Interestingly the older ones had some grease applied to the stainless steel spindle collar/ring but the newer ones don’t - presumably it wasnt a good idea (maybe trapped sediment/sand or something).