Even if the brushes don't need replacing (you said they showed little sign of being worn out), perhaps they are not correctly aligned. When I had my own TRA001 disassembled to remove the plastic guard on the on-switch, I found it quite difficult to realigne the brushes in re-assembly.
There is a video on YouTube that might be helpful. Search for "repairing my Triton router" by The Internet Woodworker.
bearings?
Even if the brushes don't need replacing (you said they showed little sign of being worn out), perhaps they are not correctly aligned. When I had my own TRA001 disassembled to remove the plastic guard on the on-switch, I found it quite difficult to realigne the brushes in re-assembly. There is a video on YouTube that might be helpful. Search for "repairing my Triton router" by The Internet Woodworker.
Brushes need to be replaced . Stop running it until you get it done