Someone responded to my for sale ad on a Grizzly spindle sander and asked if the largest drum had any wobble. After checking I found little wobble or runout on the largest but some on the smallest. The wobble was more pronounced at the end, which suggests a bent spindle. I don't use spindle sanders much but never noticed that drum wobble being a problem. Is this normal or has it been that most of the work done is closer to the lower end of the spindle? Also, does anyone know what type taper is used to mate with the motor shaft?