I got it fixed after a couple try's, with the first attempt I reattached the tab with too much clearance between the tab and the contact and the spring would not hold it down far enough. So I resolder it and now it works fine.
Ironman1, While having the transformer open I noticed a couple set screws that hold the brush arm onto the shaft. Maybe that's the problem with the handle moving and no voltage increase, the shaft is slipping.
