New Front Calipers and Pads Installed - Problem bleeding/Pedal

Sometimes you just have to pay the guy.  I needed a rear decklid spring compressor to change out my springs.  I tried all the homemade suggestions and couldn't get the old ones out.  A former sponsor on here had a "home made" tool that would work.  It's 2 big washers welded to 2 pieces of  bar stock.  Looked home made but it worked.

It cost me $51 dollars for a "tool" I will never use again.

Years ago I had a heck of a time getting getting a good pedal when I replaced all the calipers on "The Toy" (my homemade pressure bleeder sure got a workout on that project!).  Thankfully the local Corvette parts outfit I bought them from was good about swapping out (multiple times) what I thought were bad calipers.  Turned out it was the new master cylinder I had bought from them that was the culprit.  Swapped it out and didn't have any more issues with the brakes. 

"Mr. Apple" has pointed out many times that a new part doesn't necessarily mean it's good.

UPDATE. Gravity bled all four corners. The fronts had a steady flow of drips, the rears started out dripping pretty good but then they just stopped. Haven't got the Motive yet so I used the Mightyvac on the rears, worked like a champ. I could see several bubbles coming out until it turned to all fluid. Not sure how the air got in the rears since I only changed the front calipers. Probably from pumping the pedal and it went through the propotioning valve to the back? Not sure how that all works. I now have a good firm pedal! Hallelujah! Probably return the Motive (or put it on ebay) because I don't think I will ever use it. Thanks for all the help guys!

Is the car stops in a straight line now?

I haven't put the wheels back on yet. May have spoken too soon. lol.

Car back together and on the road again. Brakes work perfectly. Thanks to everyone for their help!