I had two of mine rebuilt earlier this year. HJ charges $60 each which I consider reasonable.
When I got them back I noticed that the weep ports on the bottom of the motor housing were sealed with some adhesive. I am thinking that HJ decided that more moisture comes in the weep holes than goes out.
How did you dis-assemble your motors? I couldn't get my motor out of the plastic housing. The two motor screws and the end bell could be removed, but the armature was held in by the brushes and I didn't want to damage them by pulling on the armature. I would have preferred to clean and oil them myself.
Did you have a secret method of pulling the brushes back to remove it?