Yes everyone wants to know what their cnc machine needs to keep it up to knew specs but one thing no one thinks about is the router. So take 5 minutes pull the 4 screws out of the top of the router the the top will pull off. Take the motor out of the tube. Use a compressor or canned air if you have too but a compressor is better and blow all the dust out of the tube. Then clean out the motor. After that slide the motor back in and pop the screws back into secure the top of the cover. Make sure you don’t pinch any wires. Do this at least once a year.