Originally Posted by andrewtexas123
ok so i need to switch the to wires arounnd sould that fix the prob?
No it won't make a difference, even if mounted backwards the motor should run. Besides, you only need to turn the can 180° to make it turn the correct way if the wires are soldered the wrong way around.
If you've recently cut the comm, Check that there is no copper dust in the segments between the comm's poles. Also make sure your endbell's 0 matches the can's 0 point...