We have a maxxum 80# thrust 3x steering and it wore out the brushes in 6 or 7 trips we replaced the brushes and now it pretty much doesn't work right when you turn it all the way up its like it catches and wontnpull anymore when its halfway up it pulls decent but vibrates like its only pulling half of the full turn any suggestions I think my armature is rurnt but if anyone thinks different let me know