Chuck,
I will try the remelt on the lugs. As for the springs......they don't seem weak at all. In fact, the brush plate on this motor is very strange. The brush spring wells are mounted UNDER the brush plate and the springs are at the bottom. Every pullmor I've worked on has the springs at the top. The tension is much lower when on top. So, for awhile I thought the plate was upside down. Pushing on the brushes while the motor was running did not really effect it's operation.