Trumpy,
You are right about the dado. It has 2 blades, one on either side and four chippers in the middle.
I can't imagine what effect the brake has on this. The only thing I can think is it loosens itself when the brake is applied or the torque created due to the weight of the cutters might damage the arbor of the motor.
The saw in question is a Makita 5903R. Does this mean anything to you?
I'm almost sure it's a series motor. So can the wiring be altered to disable the brake?
Thanks
Dave
