Bench Bleed Master Cyl Question

Thanks for all your time. Long story even longer since I'm taking a break before cleaning-up lots of brake fluid in the garage. Tried all of the above with no joy. Today, 1st thing, I decided to disassemble the master and start over. I just didn't like the way things "felt" yesterday. In-addition to the other problem the plunger was choppy and tight. First time I put it back together it was a little better, but still would not bleed the front reservoir. So I decided to install it on the car against AJ's advice so that I could have my angry wife pump the pedal while I stood guard against fluid spills. Still nothing, and no indication of any vacuum while doing the finger trick. Then I noticed that, when looking into the small holes on the bottom of the master, I could see the rear piston moving but not the front. Removed it again, disassembled it again. This time I ran some 1000 grit around the bore, cleaned and re-assembled. It felt better, and upon re-assembly I got some immediate satisfaction from the front reservoir. I dunno….I guess maybe the bore was just a little too tight and the front piston was getting hung. BTW AJ the reason for this job is because the master leaked fluid onto the firewall both inside and out, and ruined the paint on both sides below it. This occurred nearly 2 years ago and I have not had a window of time to take care of it until now. Not even a square foot of firewall had to be re-painted but you can imagine what a PITA it was to get to everything. Thanks again for your help !