Help - Federal Pump Rebuild

Hello...

So I am working on my 5th reman pump this summer on my 68 dart and I have had enough of changing out these pumps. The problems I have seen was the gasket to the reservoir leaking right after installation, or the pulley rattling so bad you can hear it and lose low speed power assist. These problems are keeping me from enjoying the car during the time of year I can actually drive it up here in PA...

My question is how hard is it to rebuild these federal pumps?

I believe in order to get the shaft out and change the bearing (which I think is what is causing the rattling sound) I need a press to press it out. Now I know I can get a press at harbor freight for under $300. What weight ratting can I get for this job and still use it for any other work needed on vehicle restoration (pressing out various bearings in the rear end, trans, front end bushings, etc.)?

I believe the seals in these pumps are just standard O-rings/Square seal rings correct? Is there a part source for the seals? or any of the internal valves in the pump?

thank you