I am looking for a good spindle or router for my Workbee. I bought a Makita RT0701C clone which has decent shaft runout ~0.07mm, but the collet, collet nut, or combination of both are giving me significant runout ~0.22mm. I have tried several different brands of endmills from the inexpensive unbranded Chinese carbide to Amana high-quality carbide. A spindle or router with standard collet replacements would be ideal. ER11 seems to be common, but I am not sure if a spindle with an ER11 would be too heavy for the Workbee. Suggestions are welcome.